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 A303105 #4 Apr 18 2018 12:41:14 %S A303105 0,111,2869,49534,1138331,25372284,568099880,12700233541,284202349097, %T A303105 6359037680577,142285824095768,3183697496083230,71236519396617958, %U A303105 1593945862977398560,35665181412067143397,798022847623306938661 %N A303105 Number of 5Xn 0..1 arrays with every element equal to 1, 2, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. %C A303105 Row 5 of A303102. %H A303105 R. H. Hardin, <a href="/A303105/b303105.txt">Table of n, a(n) for n = 1..210</a> %e A303105 Some solutions for n=5 %e A303105 ..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0 %e A303105 ..0..1..0..1..0. .0..1..0..0..1. .1..0..0..1..0. .0..1..0..1..1 %e A303105 ..0..0..1..1..1. .0..0..1..1..0. .0..1..1..1..1. .1..1..1..0..1 %e A303105 ..0..0..1..0..1. .1..1..1..0..1. .0..1..1..0..0. .1..0..1..0..1 %e A303105 ..0..1..0..0..0. .1..0..0..0..0. .0..0..0..1..0. .0..1..0..1..0 %Y A303105 Cf. A303102. %K A303105 nonn %O A303105 1,2 %A A303105 _R. H. Hardin_, Apr 18 2018