A307248 - cp's OEIS frontend

A307248 a(n) is the number of n X n binary matrices (over the reals) with at least one row and column full of 1's where the row index equals the column index.

n	a(n)
1	1
2	3
3	43
4	1959
5	322711
6	200353563
7	480333970243
8	4501677356510799
9	166000436233279199791
10	24177686356348838326758723
11	13944023623713892837664882211163
12	31901388234430284116488783907815338999
13	289909480221693304736013256104154256737093831

[1, 3, 43, 1959, 322711, 200353563, 480333970243, 4501677356510799, 166000436233279199791, 24177686356348838326758723, 13944023623713892837664882211163, 31901388234430284116488783907815338999, 289909480221693304736013256104154256737093831]

cp's OEIS Frontend

A307248 a(n) is the number of n X n binary matrices (over the reals) with at least one row and column full of 1's where the row index equals the column index.

Table of values

List of values