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 A296833 #4 Dec 21 2017 12:44:43 %S A296833 34,353,3755,44951,508111,5834429,67007971,768117235,8815633972, %T A296833 101151930988,1160784250565,13320805118343,152872860190807, %U A296833 1754476739053004,20135403174093836,231092540344213255 %N A296833 Number of nX7 0..1 arrays with each 1 adjacent to 0, 3 or 5 king-move neighboring 1s. %C A296833 Column 7 of A296834. %H A296833 R. H. Hardin, <a href="/A296833/b296833.txt">Table of n, a(n) for n = 1..210</a> %e A296833 Some solutions for n=4 %e A296833 ..0..0..0..1..0..0..0. .0..1..0..0..0..1..1. .0..0..0..0..1..0..1 %e A296833 ..0..0..0..0..0..0..0. .0..0..0..0..0..1..1. .1..0..1..0..0..0..0 %e A296833 ..1..1..1..0..0..0..0. .1..0..1..1..0..0..0. .0..0..0..0..0..0..0 %e A296833 ..1..1..1..0..0..0..0. .0..0..1..1..0..1..0. .0..0..0..0..0..1..0 %Y A296833 Cf. A296834. %K A296833 nonn %O A296833 1,1 %A A296833 _R. H. Hardin_, Dec 21 2017