A083402 - cp's OEIS frontend

A083402 Let A_n be the upper triangular matrix in the group GL(n,2) that has zero entries below the main diagonal and 1 elsewhere; a(n) is the size of the conjugacy class of this matrix in GL(n,2).

n	a(n)
1	1
2	3
3	42
4	2520
5	624960
6	629959680
7	2560156139520
8	41781748196966400
9	2732860586067178291200
10	715703393163961188325785600
11	750102961052993818881476159078400
12	3145391744524297920839316348340273152000
13	52764474940208177704130232748554603290689536000

[1, 3, 42, 2520, 624960, 629959680, 2560156139520, 41781748196966400, 2732860586067178291200, 715703393163961188325785600, 750102961052993818881476159078400, 3145391744524297920839316348340273152000, 52764474940208177704130232748554603290689536000]

cp's OEIS Frontend

A083402 Let A_n be the upper triangular matrix in the group GL(n,2) that has zero entries below the main diagonal and 1 elsewhere; a(n) is the size of the conjugacy class of this matrix in GL(n,2).

Table of values

List of values