A293845 - cp's OEIS frontend

A293845 Triangle read by rows: T(n,k) is the number of chains of length k in the partially ordered (by subspace inclusion) set of all subspaces of GF(2)^n, n>=0, 0<=k<=n.

n	a(n)
0	1
1	2
2	1
3	5
4	7
5	3
6	16
7	50
8	56
9	21
10	67
11	446
12	1010
13	945
14	315
15	374
16	5395
17	22692
18	40455
19	32550
20	9765
21	2825
22	92881
23	704601
24	2167179
25	3193155
26	2255715
27	615195
28	29212
29	2350136
30	32061404
31	162602418
32	394534644
33	496062000
34	312519060
35	78129765
36	417199
37	89342600
38	2220570872
39	18194735010
40	68980503390
41	138302085600
42	151794972000

[1, 2, 1, 5, 7, 3, 16, 50, 56, 21, 67, 446, 1010, 945, 315, 374, 5395, 22692, 40455, 32550, 9765, 2825, 92881, 704601, 2167179, 3193155, 2255715, 615195, 29212, 2350136, 32061404, 162602418, 394534644, 496062000, 312519060, 78129765, 417199, 89342600, 2220570872, 18194735010, 68980503390, 138302085600, 151794972000]

cp's OEIS Frontend

A293845 Triangle read by rows: T(n,k) is the number of chains of length k in the partially ordered (by subspace inclusion) set of all subspaces of GF(2)^n, n>=0, 0<=k<=n.

Table of values

List of values