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 A030713 #8 Feb 12 2021 17:48:18 %S A030713 1,2,5,8,10,13,19,24,27,36,43,45,48,60,63,77,80,98,113,116,117,120, %T A030713 141,144,163,168,171,188,201,224,231,232,235,271,306,307,310,349,352, %U A030713 387,394,395,398,446,478,494,495,498,538,544,551 %N A030713 Numbers k such that A030707(k) = 1. %K A030713 nonn %O A030713 1,2 %A A030713 _Clark Kimberling_