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 A050106 #10 Jul 04 2021 13:55:16 %S A050106 1,2,4,5,7,8,9,11,14,15,17,19,20,21,24,25,28,29,30,32,34,36,38,40,42, %T A050106 43,45,47,48,49,50,52,55,56,58,61,62,64,65,68,70,72,73,75,77,78,79,80, %U A050106 82,85,87,89,91,92,94,96,98,100,101,103,104 %N A050106 Numbers k such that A050104(k) < A050104(k+1). %K A050106 nonn %O A050106 1,2 %A A050106 _Clark Kimberling_