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 A297686 #8 Oct 28 2019 20:03:11 %S A297686 64,865,18840,260924,4870764,78957968,1368968852,22772982621, %T A297686 388437292266,6536987996149,110788354031138,1870242391300687, %U A297686 31643467601797592,534716690271693434,9041935800076605287 %N A297686 Number of 6Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 1 or 4 neighboring 1s. %C A297686 Row 6 of A297682. %H A297686 R. H. Hardin, <a href="/A297686/b297686.txt">Table of n, a(n) for n = 1..210</a> %H A297686 Robert Israel, <a href="/A297686/a297686.txt">Linear recurrence of order 102</a> %H A297686 Robert Israel, <a href="/A297686/a297686.pdf">Maple-assisted proof of recurrence</a> %F A297686 Linear recurrence of order 102 (see links). - _Robert Israel_, Oct 28 2019 %e A297686 Some solutions for n=3 %e A297686 ..0..0..0. .1..0..1. .1..0..1. .0..0..1. .1..0..0. .0..0..0. .1..1..0 %e A297686 ..1..0..0. .0..0..0. .0..0..1. .1..0..1. .0..1..0. .1..0..0. .0..0..0 %e A297686 ..0..0..1. .0..0..0. .1..0..1. .0..1..0. .0..1..0. .1..0..0. .1..1..1 %e A297686 ..1..1..1. .0..0..0. .1..0..1. .1..0..1. .0..0..0. .1..0..0. .1..0..1 %e A297686 ..1..0..0. .0..0..0. .0..1..1. .0..0..0. .1..0..0. .0..0..0. .0..0..0 %e A297686 ..0..0..1. .1..0..1. .0..0..1. .0..0..1. .0..0..1. .0..0..1. .1..1..0 %Y A297686 Cf. A297682. %K A297686 nonn %O A297686 1,1 %A A297686 _R. H. Hardin_, Jan 03 2018