This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A055083 #10 Feb 28 2023 23:48:31 %S A055083 1,11,91,633,3835,20755,102089,461272,1930310,7534742,27602968, %T A055083 95428291,312864361,976985630,2917175450,8357692894,23046527311, %U A055083 61337188725,157950527167,394427897066,957058104818,2260601179661,5206447640059,11709619965923,25752660738209 %N A055083 Number of 5 X n binary matrices with no zero rows or columns, up to row and column permutation. %H A055083 Andrew Howroyd, <a href="/A055083/b055083.txt">Table of n, a(n) for n = 1..1000</a> %o A055083 (PARI) Vec((G(5, x) - G(4, x))*(1 - x) + O(x^30)) \\ G defined in A028657. - _Andrew Howroyd_, Feb 28 2023 %Y A055083 Column k=5 of A056152. %Y A055083 Cf. A024206, A055609, A054976, A048291. %K A055083 nonn %O A055083 1,2 %A A055083 _Vladeta Jovovic_, Jun 13 2000 %E A055083 Terms a(21) and beyond from _Andrew Howroyd_, Mar 25 2020