A183109 - cp's OEIS frontend

A183109 Triangle read by rows: T(n,m) = number of n X m binary matrices with no zero rows or columns (n >= 1, 1 <= m <= n).

n	a(n)
1	1
2	1
3	7
4	1
5	25
6	265
7	1
8	79
9	2161
10	41503
11	1
12	241
13	16081
14	693601
15	24997921
16	1
17	727
18	115465
19	10924399
20	831719761
21	57366997447
22	1
23	2185
24	816985
25	167578321
26	26666530801
27	3776451407065
28	505874809287625

[1, 1, 7, 1, 25, 265, 1, 79, 2161, 41503, 1, 241, 16081, 693601, 24997921, 1, 727, 115465, 10924399, 831719761, 57366997447, 1, 2185, 816985, 167578321, 26666530801, 3776451407065, 505874809287625]

cp's OEIS Frontend

A183109 Triangle read by rows: T(n,m) = number of n X m binary matrices with no zero rows or columns (n >= 1, 1 <= m <= n).

Table of values

List of values