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 A055084 #10 Feb 28 2023 23:48:27 %S A055084 1,15,180,2001,20755,200082,1781941,14637962,111011667,779695050, %T A055084 5093379110,31092553357,178203364143,963217652830,4930357535218, %U A055084 23989343505296,111335037107474,494383391324356,2106346854756098 %N A055084 Number of 6 X n binary matrices with no zero rows or columns, up to row and column permutation. %H A055084 Andrew Howroyd, <a href="/A055084/b055084.txt">Table of n, a(n) for n = 1..500</a> %o A055084 (PARI) Vec((G(6, x) - G(5, x))*(1 - x) + O(x^30)) \\ G defined in A028657. - _Andrew Howroyd_, Feb 28 2023 %Y A055084 Column k=6 of A056152. %Y A055084 Cf. A024206, A055609, A054976, A048291. %K A055084 nonn %O A055084 1,2 %A A055084 _Vladeta Jovovic_, Jun 13 2000