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 A050018 #10 Jul 04 2021 13:41:03 %S A050018 1,4,5,11,14,20,22,27,30,35,37,38,44,50,54,56,63,67,71,75,77,82,87,89, %T A050018 91,92,101,105,110,114,118,122,125,129,134,138,142,146,151,152,161, %U A050018 165,170,174,175,181,184,188,192,197,204,205,210 %N A050018 Numbers k such that A050016(k) < A050016(k+1). %K A050018 nonn,easy %O A050018 1,2 %A A050018 _Clark Kimberling_