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 A030342 #11 Mar 31 2020 05:31:41 %S A030342 0,3,9,15,16,19,22,24,33,42,43,46,49,51,60,69,70,71,74,75,78,79,81,83, %T A030342 87,91,93,95,99,103,105,106,110,114,117,129,141,142,146,150,153,165, %U A030342 177,178,179,182,183,186,187,189,191,195,199,201 %N A030342 Position of n-th 0 in A030341. %K A030342 nonn,base %O A030342 1,2 %A A030342 _Clark Kimberling_ %E A030342 Initial 0 inserted for consistency with change in A030341 by _Sean A. Irvine_, Mar 31 2020