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 A066105 #6 Feb 01 2023 08:17:50
%S A066105 1,2,3,4,9,10,13,16,27,35,39,40,44,55,56,63,66
%N A066105 Indices of the maximum increasing subsequences of A066848 and A066849.
%C A066105 In other words, a_k is the smallest denominator that is not covered by the time a_{k-1} is covered. This sequence is finite if there is a denominator that is never covered.
%K A066105 nonn,more
%O A066105 0,2
%A A066105 _David Applegate_, May 14 2002