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 A366312 #19 Jan 06 2025 22:06:59 %S A366312 1,5,7,9,28,47,1031,745771,115318369671 %N A366312 Index of first occurrence of n in A366311. %H A366312 Samuel Harkness, <a href="/A366312/a366312.m.txt">MATLAB program</a>. %H A366312 Kevin Ryde, <a href="/A366312/a366312.c.txt">C program</a> %o A366312 (MATLAB) % See Harkness link. %o A366312 (C) /* See Ryde link. */ %Y A366312 Cf. A355271, A366311. %K A366312 nonn,fini,full %O A366312 1,2 %A A366312 _Samuel Harkness_, Oct 06 2023 %E A366312 a(9) from _Kevin Ryde_, Oct 12 2023