Identifier
- St001768: Signed permutations ⟶ ℤ
Values
=>
[1]=>1
[-1]=>1
[1,2]=>1
[1,-2]=>1
[-1,2]=>1
[-1,-2]=>2
[2,1]=>1
[2,-1]=>1
[-2,1]=>1
[-2,-1]=>1
[1,2,3]=>1
[1,2,-3]=>1
[1,-2,3]=>1
[1,-2,-3]=>2
[-1,2,3]=>1
[-1,2,-3]=>4
[-1,-2,3]=>14
[-1,-2,-3]=>42
[1,3,2]=>1
[1,3,-2]=>1
[1,-3,2]=>1
[1,-3,-2]=>1
[-1,3,2]=>4
[-1,3,-2]=>9
[-1,-3,2]=>9
[-1,-3,-2]=>16
[2,1,3]=>1
[2,1,-3]=>2
[2,-1,3]=>1
[2,-1,-3]=>3
[-2,1,3]=>1
[-2,1,-3]=>3
[-2,-1,3]=>5
[-2,-1,-3]=>12
[2,3,1]=>1
[2,3,-1]=>1
[2,-3,1]=>2
[2,-3,-1]=>2
[-2,3,1]=>3
[-2,3,-1]=>5
[-2,-3,1]=>5
[-2,-3,-1]=>7
[3,1,2]=>1
[3,1,-2]=>2
[3,-1,2]=>3
[3,-1,-2]=>5
[-3,1,2]=>1
[-3,1,-2]=>2
[-3,-1,2]=>5
[-3,-1,-2]=>7
[3,2,1]=>2
[3,2,-1]=>3
[3,-2,1]=>2
[3,-2,-1]=>2
[-3,2,1]=>3
[-3,2,-1]=>5
[-3,-2,1]=>2
[-3,-2,-1]=>2
[1,2,3,4]=>1
[1,2,3,-4]=>1
[1,2,-3,4]=>1
[1,2,-3,-4]=>2
[1,-2,3,4]=>1
[1,-2,3,-4]=>4
[1,-2,-3,4]=>14
[1,-2,-3,-4]=>42
[-1,2,3,4]=>1
[-1,2,3,-4]=>6
[-1,2,-3,4]=>48
[-1,2,-3,-4]=>198
[-1,-2,3,4]=>132
[-1,-2,3,-4]=>858
[-1,-2,-3,4]=>6006
[-1,-2,-3,-4]=>24024
[1,2,4,3]=>1
[1,2,4,-3]=>1
[1,2,-4,3]=>1
[1,2,-4,-3]=>1
[1,-2,4,3]=>4
[1,-2,4,-3]=>9
[1,-2,-4,3]=>9
[1,-2,-4,-3]=>16
[-1,2,4,3]=>6
[-1,2,4,-3]=>20
[-1,2,-4,3]=>20
[-1,2,-4,-3]=>50
[-1,-2,4,3]=>858
[-1,-2,4,-3]=>2860
[-1,-2,-4,3]=>2860
[-1,-2,-4,-3]=>7150
[1,3,2,4]=>1
[1,3,2,-4]=>2
[1,3,-2,4]=>1
[1,3,-2,-4]=>3
[1,-3,2,4]=>1
[1,-3,2,-4]=>3
[1,-3,-2,4]=>5
[1,-3,-2,-4]=>12
[-1,3,2,4]=>6
[-1,3,2,-4]=>40
[-1,3,-2,4]=>90
[-1,3,-2,-4]=>486
[-1,-3,2,4]=>90
[-1,-3,2,-4]=>486
[-1,-3,-2,4]=>1872
[-1,-3,-2,-4]=>6318
[1,3,4,2]=>1
[1,3,4,-2]=>1
[1,3,-4,2]=>2
[1,3,-4,-2]=>2
[1,-3,4,2]=>3
[1,-3,4,-2]=>5
[1,-3,-4,2]=>5
[1,-3,-4,-2]=>7
[-1,3,4,2]=>20
[-1,3,4,-2]=>48
[-1,3,-4,2]=>98
[-1,3,-4,-2]=>198
[-1,-3,4,2]=>486
[-1,-3,4,-2]=>1300
[-1,-3,-4,2]=>1300
[-1,-3,-4,-2]=>2730
[1,4,2,3]=>1
[1,4,2,-3]=>2
[1,4,-2,3]=>3
[1,4,-2,-3]=>5
[1,-4,2,3]=>1
[1,-4,2,-3]=>2
[1,-4,-2,3]=>5
[1,-4,-2,-3]=>7
[-1,4,2,3]=>20
[-1,4,2,-3]=>98
[-1,4,-2,3]=>486
[-1,4,-2,-3]=>1300
[-1,-4,2,3]=>48
[-1,-4,2,-3]=>198
[-1,-4,-2,3]=>1300
[-1,-4,-2,-3]=>2730
[1,4,3,2]=>2
[1,4,3,-2]=>3
[1,4,-3,2]=>2
[1,4,-3,-2]=>2
[1,-4,3,2]=>3
[1,-4,3,-2]=>5
[1,-4,-3,2]=>2
[1,-4,-3,-2]=>2
[-1,4,3,2]=>98
[-1,4,3,-2]=>288
[-1,4,-3,2]=>198
[-1,4,-3,-2]=>352
[-1,-4,3,2]=>288
[-1,-4,3,-2]=>838
[-1,-4,-3,2]=>352
[-1,-4,-3,-2]=>572
[2,1,3,4]=>1
[2,1,3,-4]=>2
[2,1,-3,4]=>4
[2,1,-3,-4]=>10
[2,-1,3,4]=>1
[2,-1,3,-4]=>5
[2,-1,-3,4]=>28
[2,-1,-3,-4]=>100
[-2,1,3,4]=>1
[-2,1,3,-4]=>5
[-2,1,-3,4]=>28
[-2,1,-3,-4]=>100
[-2,-1,3,4]=>42
[-2,-1,3,-4]=>240
[-2,-1,-3,4]=>1274
[-2,-1,-3,-4]=>4550
[2,1,4,3]=>2
[2,1,4,-3]=>3
[2,1,-4,3]=>3
[2,1,-4,-3]=>4
[2,-1,4,3]=>5
[2,-1,4,-3]=>14
[2,-1,-4,3]=>14
[2,-1,-4,-3]=>30
[-2,1,4,3]=>5
[-2,1,4,-3]=>14
[-2,1,-4,3]=>14
[-2,1,-4,-3]=>30
[-2,-1,4,3]=>240
[-2,-1,4,-3]=>702
[-2,-1,-4,3]=>702
[-2,-1,-4,-3]=>1560
[2,3,1,4]=>1
[2,3,1,-4]=>3
[2,3,-1,4]=>1
[2,3,-1,-4]=>4
[2,-3,1,4]=>4
[2,-3,1,-4]=>14
[2,-3,-1,4]=>14
[2,-3,-1,-4]=>42
[-2,3,1,4]=>5
[-2,3,1,-4]=>28
[-2,3,-1,4]=>42
[-2,3,-1,-4]=>198
[-2,-3,1,4]=>42
[-2,-3,1,-4]=>198
[-2,-3,-1,4]=>572
[-2,-3,-1,-4]=>1716
[2,3,4,1]=>1
[2,3,4,-1]=>1
[2,3,-4,1]=>3
[2,3,-4,-1]=>3
[2,-3,4,1]=>9
[2,-3,4,-1]=>14
[2,-3,-4,1]=>21
[2,-3,-4,-1]=>28
[-2,3,4,1]=>14
[-2,3,4,-1]=>28
[-2,3,-4,1]=>58
[-2,3,-4,-1]=>100
[-2,-3,4,1]=>198
[-2,-3,4,-1]=>462
[-2,-3,-4,1]=>462
[-2,-3,-4,-1]=>858
[2,4,1,3]=>2
[2,4,1,-3]=>5
[2,4,-1,3]=>4
[2,4,-1,-3]=>9
[2,-4,1,3]=>3
[2,-4,1,-3]=>7
[2,-4,-1,3]=>9
[2,-4,-1,-3]=>16
[-2,4,1,3]=>14
[-2,4,1,-3]=>58
[-2,4,-1,3]=>198
[-2,4,-1,-3]=>462
[-2,-4,1,3]=>28
[-2,-4,1,-3]=>100
[-2,-4,-1,3]=>462
[-2,-4,-1,-3]=>858
[2,4,3,1]=>3
[2,4,3,-1]=>4
[2,4,-3,1]=>5
[2,4,-3,-1]=>5
[2,-4,3,1]=>6
[2,-4,3,-1]=>9
[2,-4,-3,1]=>7
[2,-4,-3,-1]=>7
[-2,4,3,1]=>58
[-2,4,3,-1]=>142
[-2,4,-3,1]=>100
[-2,4,-3,-1]=>154
[-2,-4,3,1]=>142
[-2,-4,3,-1]=>352
[-2,-4,-3,1]=>154
[-2,-4,-3,-1]=>220
[3,1,2,4]=>1
[3,1,2,-4]=>3
[3,1,-2,4]=>4
[3,1,-2,-4]=>14
[3,-1,2,4]=>5
[3,-1,2,-4]=>28
[3,-1,-2,4]=>42
[3,-1,-2,-4]=>198
[-3,1,2,4]=>1
[-3,1,2,-4]=>4
[-3,1,-2,4]=>14
[-3,1,-2,-4]=>42
[-3,-1,2,4]=>42
[-3,-1,2,-4]=>198
[-3,-1,-2,4]=>572
[-3,-1,-2,-4]=>1716
[3,1,4,2]=>2
[3,1,4,-2]=>3
[3,1,-4,2]=>5
[3,1,-4,-2]=>7
[3,-1,4,2]=>14
[3,-1,4,-2]=>28
[3,-1,-4,2]=>58
[3,-1,-4,-2]=>100
[-3,1,4,2]=>4
[-3,1,4,-2]=>9
[-3,1,-4,2]=>9
[-3,1,-4,-2]=>16
[-3,-1,4,2]=>198
[-3,-1,4,-2]=>462
[-3,-1,-4,2]=>462
[-3,-1,-4,-2]=>858
[3,2,1,4]=>2
[3,2,1,-4]=>8
[3,2,-1,4]=>5
[3,2,-1,-4]=>23
[3,-2,1,4]=>4
[3,-2,1,-4]=>18
[3,-2,-1,4]=>14
[3,-2,-1,-4]=>56
[-3,2,1,4]=>5
[-3,2,1,-4]=>23
[-3,2,-1,4]=>42
[-3,2,-1,-4]=>156
[-3,-2,1,4]=>14
[-3,-2,1,-4]=>56
[-3,-2,-1,4]=>110
[-3,-2,-1,-4]=>286
[3,2,4,1]=>3
[3,2,4,-1]=>4
[3,2,-4,1]=>11
[3,2,-4,-1]=>14
[3,-2,4,1]=>9
[3,-2,4,-1]=>14
[3,-2,-4,1]=>30
[3,-2,-4,-1]=>42
[-3,2,4,1]=>14
[-3,2,4,-1]=>28
[-3,2,-4,1]=>44
[-3,2,-4,-1]=>72
[-3,-2,4,1]=>56
[-3,-2,4,-1]=>110
[-3,-2,-4,1]=>110
[-3,-2,-4,-1]=>176
[3,4,1,2]=>2
[3,4,1,-2]=>5
[3,4,-1,2]=>9
[3,4,-1,-2]=>14
[3,-4,1,2]=>5
[3,-4,1,-2]=>12
[3,-4,-1,2]=>30
[3,-4,-1,-2]=>42
[-3,4,1,2]=>9
[-3,4,1,-2]=>30
[-3,4,-1,2]=>156
[-3,4,-1,-2]=>264
[-3,-4,1,2]=>14
[-3,-4,1,-2]=>42
[-3,-4,-1,2]=>264
[-3,-4,-1,-2]=>396
[3,4,2,1]=>5
[3,4,2,-1]=>9
[3,4,-2,1]=>5
[3,4,-2,-1]=>5
[3,-4,2,1]=>16
[3,-4,2,-1]=>30
[3,-4,-2,1]=>12
[3,-4,-2,-1]=>12
[-3,4,2,1]=>44
[-3,4,2,-1]=>114
[-3,4,-2,1]=>42
[-3,4,-2,-1]=>54
[-3,-4,2,1]=>84
[-3,-4,2,-1]=>210
[-3,-4,-2,1]=>54
[-3,-4,-2,-1]=>66
[4,1,2,3]=>1
[4,1,2,-3]=>3
[4,1,-2,3]=>9
[4,1,-2,-3]=>21
[4,-1,2,3]=>14
[4,-1,2,-3]=>58
[4,-1,-2,3]=>198
[4,-1,-2,-3]=>462
[-4,1,2,3]=>1
[-4,1,2,-3]=>3
[-4,1,-2,3]=>14
[-4,1,-2,-3]=>28
[-4,-1,2,3]=>28
[-4,-1,2,-3]=>100
[-4,-1,-2,3]=>462
[-4,-1,-2,-3]=>858
[4,1,3,2]=>3
[4,1,3,-2]=>6
[4,1,-3,2]=>5
[4,1,-3,-2]=>7
[4,-1,3,2]=>58
[4,-1,3,-2]=>142
[4,-1,-3,2]=>100
[4,-1,-3,-2]=>154
[-4,1,3,2]=>4
[-4,1,3,-2]=>9
[-4,1,-3,2]=>5
[-4,1,-3,-2]=>7
[-4,-1,3,2]=>142
[-4,-1,3,-2]=>352
[-4,-1,-3,2]=>154
[-4,-1,-3,-2]=>220
[4,2,1,3]=>3
[4,2,1,-3]=>11
[4,2,-1,3]=>14
[4,2,-1,-3]=>44
[4,-2,1,3]=>9
[4,-2,1,-3]=>30
[4,-2,-1,3]=>56
[4,-2,-1,-3]=>110
[-4,2,1,3]=>4
[-4,2,1,-3]=>14
[-4,2,-1,3]=>28
[-4,2,-1,-3]=>72
[-4,-2,1,3]=>14
[-4,-2,1,-3]=>42
[-4,-2,-1,3]=>110
[-4,-2,-1,-3]=>176
[4,2,3,1]=>6
[4,2,3,-1]=>10
[4,2,-3,1]=>16
[4,2,-3,-1]=>21
[4,-2,3,1]=>30
[4,-2,3,-1]=>56
[4,-2,-3,1]=>42
[4,-2,-3,-1]=>54
[-4,2,3,1]=>10
[-4,2,3,-1]=>19
[-4,2,-3,1]=>21
[-4,2,-3,-1]=>28
[-4,-2,3,1]=>56
[-4,-2,3,-1]=>110
[-4,-2,-3,1]=>54
[-4,-2,-3,-1]=>66
[4,3,1,2]=>5
[4,3,1,-2]=>16
[4,3,-1,2]=>44
[4,3,-1,-2]=>84
[4,-3,1,2]=>5
[4,-3,1,-2]=>12
[4,-3,-1,2]=>42
[4,-3,-1,-2]=>54
[-4,3,1,2]=>9
[-4,3,1,-2]=>30
[-4,3,-1,2]=>114
[-4,3,-1,-2]=>210
[-4,-3,1,2]=>5
[-4,-3,1,-2]=>12
[-4,-3,-1,2]=>54
[-4,-3,-1,-2]=>66
[4,3,2,1]=>16
[4,3,2,-1]=>35
[4,3,-2,1]=>21
[4,3,-2,-1]=>26
[4,-3,2,1]=>21
[4,-3,2,-1]=>42
[4,-3,-2,1]=>12
[4,-3,-2,-1]=>12
[-4,3,2,1]=>35
[-4,3,2,-1]=>84
[-4,3,-2,1]=>42
[-4,3,-2,-1]=>54
[-4,-3,2,1]=>26
[-4,-3,2,-1]=>54
[-4,-3,-2,1]=>12
[-4,-3,-2,-1]=>12
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Description
The number of reduced words of a signed permutation.
This is the number of ways to write a permutation as a minimal length product of simple reflections.
This is the number of ways to write a permutation as a minimal length product of simple reflections.
Code
def statistic(pi): return len(pi.reduced_words())
Created
Feb 04, 2022 at 13:13 by Martin Rubey
Updated
Feb 04, 2022 at 13:13 by Martin Rubey
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