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 A078929 #7 Apr 11 2022 12:08:47 %S A078929 3,1,3,1,2,2,3,1,2,3,1,3,1,2,3,1,3,1,2,2,3,1,2,2,3,1,3,1,2,3,1,2,2,3, %T A078929 1,2,3,1,3,1,2,2,3,1,2,2,3,1,2,3,1,3,1,2,3,1,3,1,2,2,3,1,2,3,1,3,1,2, %U A078929 3,1,2,2,3,1,2,2,3,1,3,1,2,3,1,3,1,2,2,3,1,2,3,1,3,1,2,3,1,3,1,2,2,3,1,2,2 %N A078929 Least k > 0 such that A000002(n+k) = A000002(n). %Y A078929 Cf. A000002. %K A078929 nonn %O A078929 1,1 %A A078929 _Benoit Cloitre_, Dec 15 2002