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 A026413 #8 Sep 27 2019 02:50:59 %S A026413 1,2,4,4,6,7,9,9,11,13,13,16,15,15,19,19,19,25,21,22,27,32,32,29,34, %T A026413 32,31,41,37,36,36,37,48,40,47,43,44,45,46,45,51,50,49,59,63,51,51,65, %U A026413 55,59,69,70,71,68,74,73,86,68,74,75,85,82,90,95,77,79,83,82,80,79,89,90 %N A026413 a(n) = greatest number of numbers between consecutive appearances of n in A026409. %K A026413 nonn %O A026413 2,2 %A A026413 _Clark Kimberling_ %E A026413 More terms from _Sean A. Irvine_, Sep 26 2019