A270882 - cp's OEIS frontend

A270882 Triangle read by rows: D*(n,m) is the number of direct-sum decompositions of a finite vector space of dimension n with m blocks over GF(2) with a block containing any given nonzero vector.

n	a(n)
0	1
1	0
2	1
3	0
4	1
5	2
6	0
7	1
8	16
9	12
10	0
11	1
12	176
13	560
14	224
15	0
16	1
17	3456
18	40000
19	53760
20	13440
21	0
22	1
23	128000
24	5848832
25	20951040
26	15554560
27	2666496
28	0
29	1
30	9115648
31	1934195712
32	17826414592
33	30398054400
34	14335082496
35	1791885312
36	0
37	1
38	1259921408
39	1510821195776
40	37083513880576
41	134908940386304
42	133854174117888
43	43693331447808
44	4161269661696

[1, 0, 1, 0, 1, 2, 0, 1, 16, 12, 0, 1, 176, 560, 224, 0, 1, 3456, 40000, 53760, 13440, 0, 1, 128000, 5848832, 20951040, 15554560, 2666496, 0, 1, 9115648, 1934195712, 17826414592, 30398054400, 14335082496, 1791885312, 0, 1, 1259921408, 1510821195776, 37083513880576, 134908940386304, 133854174117888, 43693331447808, 4161269661696]

cp's OEIS Frontend

A270882 Triangle read by rows: D*(n,m) is the number of direct-sum decompositions of a finite vector space of dimension n with m blocks over GF(2) with a block containing any given nonzero vector.

Table of values

List of values