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 A050007 #10 Jul 04 2021 13:37:00 %S A050007 2,5,6,7,8,10,12,13,14,18,19,20,21,23,24,25,26,28,29,31,32,34,35,37, %T A050007 41,42,43,44,45,46,47,49,50,51,53,54,56,57,58,61,62,63,64,65,68,69,70, %U A050007 71,73,74,77,78,79,81,82,84,85,86,88,90,91 %N A050007 Numbers k such that A050004(k) > A050004(k+1). %K A050007 nonn,easy %O A050007 1,1 %A A050007 _Clark Kimberling_