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Number of 5 X n binary matrices with no zero rows or columns, up to row and column permutation.
4

%I #10 Feb 28 2023 23:48:31

%S 1,11,91,633,3835,20755,102089,461272,1930310,7534742,27602968,

%T 95428291,312864361,976985630,2917175450,8357692894,23046527311,

%U 61337188725,157950527167,394427897066,957058104818,2260601179661,5206447640059,11709619965923,25752660738209

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

%H Andrew Howroyd, <a href="/A055083/b055083.txt">Table of n, a(n) for n = 1..1000</a>

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

%Y Column k=5 of A056152.

%Y Cf. A024206, A055609, A054976, A048291.

%K nonn

%O 1,2

%A _Vladeta Jovovic_, Jun 13 2000

%E Terms a(21) and beyond from _Andrew Howroyd_, Mar 25 2020