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 A297303 #4 Dec 27 2017 21:18:05 %S A297303 1,1,13,36,114,495,2816,14138,64406,288079,1310914,6040052,27971466, %T A297303 129714539,601185145,2783395440,12878290842,59574077350,275601620452, %U A297303 1275129562555,5900033896489,27299793712340,126316193270001 %N A297303 Number of 6Xn 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 2 neighboring 1s. %C A297303 Row 6 of A297299. %H A297303 R. H. Hardin, <a href="/A297303/b297303.txt">Table of n, a(n) for n = 1..210</a> %H A297303 R. H. Hardin, <a href="/A297303/a297303.txt">Empirical recurrence of order 68</a> %F A297303 Empirical recurrence of order 68 (see link above) %e A297303 Some solutions for n=5 %e A297303 ..0..1..1..0..0. .0..0..1..1..0. .0..0..1..1..1. .0..0..0..0..0 %e A297303 ..1..1..0..0..0. .0..1..1..0..0. .0..1..0..1..1. .0..0..0..0..0 %e A297303 ..0..1..1..0..0. .0..0..0..0..0. .1..1..0..1..0. .0..0..0..0..0 %e A297303 ..1..1..0..1..1. .0..0..0..0..0. .1..1..1..0..0. .0..0..0..0..0 %e A297303 ..0..0..1..1..0. .0..0..0..0..0. .0..0..1..1..0. .0..1..1..0..0 %e A297303 ..0..0..0..0..0. .0..0..0..0..0. .0..1..1..0..0. .1..1..0..0..0 %Y A297303 Cf. A297299. %K A297303 nonn %O A297303 1,3 %A A297303 _R. H. Hardin_, Dec 27 2017