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 A333908 #4 Apr 09 2020 15:52:37 %S A333908 0,21,22,24,52,63,73,75,81,82,88,94,95,102,105,110,114,115,118,123, %T A333908 124,125,131,140,146,176,177,179,180,181,203,215,239,249,250,256,271, %U A333908 275,280,283,297,305,311,318,319,331,336,343,344,349,356,358,362,367,372 %N A333908 Position of n-th 0 in A030604. %F A333908 a(n) = A030605(n - 1) + 1 for n > 1. %Y A333908 Cf. A030605. %K A333908 nonn %O A333908 1,2 %A A333908 _Sean A. Irvine_, Apr 09 2020