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 A295273 #4 Nov 19 2017 08:17:13 %S A295273 44,865,19997,449827,10203847,230659662,5221177246,118139247475, %T A295273 2673342943199,60493860184777,1368887903616187,30975935104352291, %U A295273 700940389558441876,15861259863124103232,358917220084448007191 %N A295273 Number of nX6 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1 or 4 1s. %C A295273 Column 6 of A295275. %H A295273 R. H. Hardin, <a href="/A295273/b295273.txt">Table of n, a(n) for n = 1..210</a> %H A295273 R. H. Hardin, <a href="/A295273/a295273.txt">Empirical recurrence of order 78</a> %F A295273 Empirical recurrence of order 78 (see link above) %e A295273 Some solutions for n=3 %e A295273 ..0..1..0..0..0..0....1..0..1..1..0..0....1..0..0..0..1..1....0..1..0..1..0..0 %e A295273 ..0..0..1..1..0..0....0..0..0..0..0..1....0..0..0..1..0..0....1..1..1..0..0..1 %e A295273 ..0..1..0..0..1..0....0..1..1..0..0..1....0..0..0..0..1..1....0..1..0..1..1..0 %Y A295273 Cf. A295275. %K A295273 nonn %O A295273 1,1 %A A295273 _R. H. Hardin_, Nov 19 2017