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 A269096 #4 Feb 19 2016 09:51:22 %S A269096 5832,7375872,5795398368,3892946216856,2416707037884480, %T A269096 1430390977786967280,819944297332124826720,459338963193935894366016, %U A269096 252910225839761737259917296,137383600294764153686560207128 %N A269096 Number of nX7 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three exactly once. %C A269096 Column 7 of A269097. %H A269096 R. H. Hardin, <a href="/A269096/b269096.txt">Table of n, a(n) for n = 1..210</a> %H A269096 R. H. Hardin, <a href="/A269096/a269096.txt">Empirical recurrence of order 64</a> %F A269096 Empirical recurrence of order 64 (see link above) %e A269096 Some solutions for n=1 %e A269096 ..0..3..2..2..0..0..1. .1..1..0..3..1..1..1. .0..1..3..1..0..3..3 %Y A269096 Cf. A269097. %K A269096 nonn %O A269096 1,1 %A A269096 _R. H. Hardin_, Feb 19 2016