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 A302744 #4 Apr 12 2018 11:24:19 %S A302744 16,512,11980,286631,6947036,168799572,4104115772,99818649293, %T A302744 2427829113648,59052536397220,1436349489188322,34936780127006555, %U A302744 849778519255324644,20669440240076116148,502749555285048546206 %N A302744 Number of 5Xn 0..1 arrays with every element equal to 0, 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. %C A302744 Row 5 of A302741. %H A302744 R. H. Hardin, <a href="/A302744/b302744.txt">Table of n, a(n) for n = 1..210</a> %H A302744 R. H. Hardin, <a href="/A302744/a302744.txt">Empirical recurrence of order 64</a> %F A302744 Empirical recurrence of order 64 (see link above) %e A302744 Some solutions for n=5 %e A302744 ..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0 %e A302744 ..0..0..1..0..1. .0..0..0..1..1. .0..0..1..0..1. .0..0..1..1..1 %e A302744 ..0..1..1..1..1. .1..0..1..1..1. .1..0..1..0..1. .1..0..1..0..0 %e A302744 ..0..1..0..1..0. .0..1..0..1..0. .1..0..0..0..0. .0..1..0..1..1 %e A302744 ..1..0..1..0..0. .1..0..0..1..1. .1..1..1..1..0. .1..0..1..0..0 %Y A302744 Cf. A302741. %K A302744 nonn %O A302744 1,1 %A A302744 _R. H. Hardin_, Apr 12 2018