A055083 Number of 5 X n binary matrices with no zero rows or columns, up to row and column permutation.

1, 11, 91, 633, 3835, 20755, 102089, 461272, 1930310, 7534742, 27602968, 95428291, 312864361, 976985630, 2917175450, 8357692894, 23046527311, 61337188725, 157950527167, 394427897066, 957058104818, 2260601179661, 5206447640059, 11709619965923, 25752660738209

Offset: 1

Author

Vladeta Jovovic, Jun 13 2000

Keywords

• nonn

Links

• Andrew Howroyd, Table of n, a(n) for n = 1..1000

Crossrefs

Column k=5 of A056152.

Cf. A024206, A055609, A054976, A048291.

Programs

PARI

Vec((G(5, x) - G(4, x))*(1 - x) + O(x^30)) \\ G defined in A028657. - Andrew Howroyd, Feb 28 2023

Extensions

Terms a(21) and beyond from Andrew Howroyd, Mar 25 2020