A289546 - cp's OEIS frontend

A289546 Triangle read by rows. T(n,k) is the number of flags in an n dimensional vector space over GF(2) that have length exactly k, n >= 0, 0 <= k <= n.

n	a(n)
0	1
1	0
2	1
3	0
4	1
5	3
6	0
7	1
8	14
9	21
10	0
11	1
12	65
13	315
14	315
15	0
16	1
17	372
18	4650
19	13020
20	9765
21	0
22	1
23	2823
24	87234
25	527310
26	1025325
27	615195
28	0
29	1
30	29210
31	2291715
32	27448764
33	105413175
34	156259530
35	78129765
36	0
37	1
38	417197
39	88508205
40	2043137265
41	14019952275
42	38897461575
43	46487210175
44	19923090075

[1, 0, 1, 0, 1, 3, 0, 1, 14, 21, 0, 1, 65, 315, 315, 0, 1, 372, 4650, 13020, 9765, 0, 1, 2823, 87234, 527310, 1025325, 615195, 0, 1, 29210, 2291715, 27448764, 105413175, 156259530, 78129765, 0, 1, 417197, 88508205, 2043137265, 14019952275, 38897461575, 46487210175, 19923090075]

cp's OEIS Frontend

A289546 Triangle read by rows. T(n,k) is the number of flags in an n dimensional vector space over GF(2) that have length exactly k, n >= 0, 0 <= k <= n.

Table of values

List of values