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 A050002 #12 Jul 04 2021 13:45:11 %S A050002 1,2,5,6,7,10,12,16,19,20,23,26,28,29,30,35,37,38,41,45,47,49,52,54, %T A050002 56,61,62,65,66,70,73,76,77,79,82,84,88,91,93,95,96,97,102,104,106, %U A050002 110,112,116,118,119,124,127,130,131,135,136,139 %N A050002 Numbers k such that A050000(k) < A050000(k+1). %K A050002 nonn,easy %O A050002 1,2 %A A050002 _Clark Kimberling_