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 A297717 #4 Jan 04 2018 21:57:00 %S A297717 12,258,2717,36981,512354,6812856,91994155,1242370107,16741579726, %T A297717 225799768740,3045362800259,41068189990009,553851481354328, %U A297717 7469298996031612,100731170465697137,1358466913972452523 %N A297717 Number of nX5 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 4 neighboring 1s. %C A297717 Column 5 of A297720. %H A297717 R. H. Hardin, <a href="/A297717/b297717.txt">Table of n, a(n) for n = 1..210</a> %H A297717 R. H. Hardin, <a href="/A297717/a297717.txt">Empirical recurrence of order 87</a> %F A297717 Empirical recurrence of order 87 (see link above) %e A297717 Some solutions for n=4 %e A297717 ..0..1..0..0..0. .1..0..0..1..1. .1..1..0..0..1. .0..0..0..1..1 %e A297717 ..0..1..1..0..0. .0..1..0..0..0. .1..1..0..1..0. .0..0..0..0..1 %e A297717 ..0..1..0..1..1. .0..0..0..1..1. .0..0..0..1..1. .0..0..0..1..1 %e A297717 ..0..0..1..0..1. .1..1..1..0..0. .0..0..0..0..0. .0..0..0..1..0 %Y A297717 Cf. A297720. %K A297717 nonn %O A297717 1,1 %A A297717 _R. H. Hardin_, Jan 04 2018