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 A030737 #16 Oct 09 2022 15:45:11 %S A030737 2,1,1,2,3,4,4,5,1,1,7,6,2,3,1,9,8,4,4,2,1,1,12,10,5,7,3,2,2,1,1,15, %T A030737 13,7,8,5,3,4,2,2,1,1,18,16,9,10,7,4,6,4,3,2,2,1,1,21,19,11,13,8,6,8, %U A030737 5,5,4,3,2,2,1,1,24,22,13,15,11,8,9,8,6,5,1,4 %N A030737 The first list after the following procedure: starting with a list [2] and an empty list, repeatedly add the distinct values already in both lists in ascending order to the second list and add the corresponding frequencies of those values to the first list. %Y A030737 The 2nd list is A030738. %K A030737 nonn %O A030737 1,1 %A A030737 _Clark Kimberling_ %E A030737 Name revised in line with A030777 by _Peter Munn_, Oct 09 2022