A346214 - cp's OEIS frontend

A346214 Triangular array read by rows. T(n,k) is the number of nilpotent n X n matrices over GF(2) with index k, 1 <= k <= n, n >= 1.

n	a(n)
1	1
2	1
3	3
4	1
5	21
6	42
7	1
8	315
9	1260
10	2520
11	1
12	6975
13	104160
14	312480
15	624960
16	1
17	373023
18	23436000
19	104993280
20	314979840
21	629959680
22	1
23	32252031
24	9175162752
25	121912197120
26	426692689920
27	1280078069760
28	2560156139520
29	1
30	6619979775
31	9978120069120
32	421755245936640
33	1989607056998400
34	6963624699494400
35	20890874098483200
36	41781748196966400

[1, 1, 3, 1, 21, 42, 1, 315, 1260, 2520, 1, 6975, 104160, 312480, 624960, 1, 373023, 23436000, 104993280, 314979840, 629959680, 1, 32252031, 9175162752, 121912197120, 426692689920, 1280078069760, 2560156139520, 1, 6619979775, 9978120069120, 421755245936640, 1989607056998400, 6963624699494400, 20890874098483200, 41781748196966400]

cp's OEIS Frontend

A346214 Triangular array read by rows. T(n,k) is the number of nilpotent n X n matrices over GF(2) with index k, 1 <= k <= n, n >= 1.

Table of values

List of values