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 A184281 #12 Sep 27 2017 19:32:18 %S A184281 24,855,44368,2691711,174342216,11767964475,817028472960, %T A184281 57906884939751,4169295435709000,303941636737938639, %U A184281 22381156868522560176,1661800897452497728851,124251574792869522460584,9345493446918377993036595,706519304586940156873850720 %N A184281 Number of distinct n X 4 toroidal 0..2 arrays. %H A184281 Andrew Howroyd, <a href="/A184281/b184281.txt">Table of n, a(n) for n = 1..100</a> %Y A184281 Column 4 of A184284. %K A184281 nonn %O A184281 1,1 %A A184281 _R. H. Hardin_, Jan 10 2011 %E A184281 Terms a(8) and beyond from _Andrew Howroyd_, Sep 27 2017