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 A297319 #4 Dec 28 2017 07:32:00 %S A297319 1,616,16389,223995,6623719,200646607,4893232934,123820581049, %T A297319 3282367305458,85515734535996,2212616825808470,57500163901287398, %U A297319 1495338053514246125,38856248352062385594,1009626165673776079481 %N A297319 Number of 6Xn 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 1 or 2 neighboring 1s. %C A297319 Row 6 of A297314. %H A297319 R. H. Hardin, <a href="/A297319/b297319.txt">Table of n, a(n) for n = 1..210</a> %e A297319 Some solutions for n=5 %e A297319 ..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0 %e A297319 ..0..0..0..0..0. .0..0..0..0..0. .0..1..0..0..1. .0..0..0..1..1 %e A297319 ..0..1..1..0..1. .0..0..1..1..0. .1..1..0..1..1. .0..0..0..1..0 %e A297319 ..1..0..1..1..0. .0..1..0..1..1. .0..1..0..1..1. .0..1..0..0..0 %e A297319 ..1..1..0..0..1. .1..1..1..0..1. .1..1..0..1..1. .1..1..1..1..1 %e A297319 ..0..1..1..1..0. .0..0..0..1..1. .1..0..0..0..0. .0..0..0..0..0 %Y A297319 Cf. A297314. %K A297319 nonn %O A297319 1,2 %A A297319 _R. H. Hardin_, Dec 28 2017