A331391 - cp's OEIS frontend

A331391 Number of binary matrices with a total of n ones, distinct columns each with the same number of ones and nonzero rows in nonincreasing lexicographic order.

n	a(n)
1	1
2	2
3	2
4	4
5	2
6	14
7	2
8	76
9	31
10	801
11	2
12	12797
13	2
14	233247
15	28480
16	5560377
17	2
18	160866915
19	2
20	5351339038
21	193927186
22	208746406130
23	2
24	9342273087807
25	5289613
26	470405726166256
27	4946464287635
28	26636935297440055
29	2
30	1679266767908385729
31	2
32	116818412262277969513

[1, 2, 2, 4, 2, 14, 2, 76, 31, 801, 2, 12797, 2, 233247, 28480, 5560377, 2, 160866915, 2, 5351339038, 193927186, 208746406130, 2, 9342273087807, 5289613, 470405726166256, 4946464287635, 26636935297440055, 2, 1679266767908385729, 2, 116818412262277969513]

cp's OEIS Frontend

A331391 Number of binary matrices with a total of n ones, distinct columns each with the same number of ones and nonzero rows in nonincreasing lexicographic order.

Table of values

List of values