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 A080296 #5 Jan 11 2024 10:52:55 %S A080296 0,2,280,47104,1552115753,320620847201,14010400861700086, %T A080296 666566814219424468355,1738670860867061382977091021290, %U A080296 403468080959285491446589623771973 %N A080296 a(n) = A080301(A080293(n)). %Y A080296 Cf. A080295. %K A080296 nonn %O A080296 0,2 %A A080296 _Antti Karttunen_, Mar 02 2003