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

1,2

Links

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

Prog

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

Crossrefs

Column k=5 of A056152.

Cf. A024206, A055609, A054976, A048291.

Sequence in context: A202661 A202121 A201085 * A016160 A005062 A125374

Adjacent sequences: A055080 A055081 A055082 * A055084 A055085 A055086

Keyword

nonn

Author

Vladeta Jovovic, Jun 13 2000

Extensions

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

Status

approved