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 A284163 #6 Apr 05 2020 22:35:05 %S A284163 19,467,21790,1142173,63520018,3648835932,213897742464,12712253739523, %T A284163 762954434250117,46132889929802552,2805893251846100894, %U A284163 171472537110465965686,10520216685129431413147,647576935194197811151494 %N A284163 Number of n X 6 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero. %C A284163 Column 6 of A284165. %H A284163 R. H. Hardin, <a href="/A284163/b284163.txt">Table of n, a(n) for n = 1..40</a> %e A284163 Some solutions for n=3 %e A284163 ..0..1..0..1..0..0. .0..1..0..1..1..1. .0..0..0..0..1..1. .0..1..0..1..1..1 %e A284163 ..0..1..1..0..0..0. .0..1..1..1..1..1. .0..1..1..1..0..1. .1..0..0..0..1..1 %e A284163 ..1..1..1..0..0..0. .0..0..0..1..1..1. .1..1..1..0..0..0. .1..0..0..1..0..1 %Y A284163 Cf. A284165. %K A284163 nonn %O A284163 1,1 %A A284163 _R. H. Hardin_, Mar 21 2017