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 A259396 #10 Jul 13 2015 18:07:56 %S A259396 1,2,1,1,1,1,1,3,1,1,1,4,1,2,1,1,2,1,1,1,1,1,1,6,1,5,1,1,3,1,1,8,1,3, %T A259396 1,1,1,4,1,1,1,2,1,1,3,5,1,1,2,1,6,1,1,14,1,1,1,2,1,3,2,1,1,1,1,1,1,2, %U A259396 2,1,3,2,1,3,1,3,1,1,1,1,1,1,4,1,2,3,1,2,1,1,2,11,1,1,1,2,1,5 %N A259396 Length of runs of identical terms in A080378. %t A259396 Length/@Split[Mod[Differences[Prime[Range[200]]],4]] %Y A259396 Cf. A001223, A080378, A259360. %K A259396 nonn %O A259396 1,2 %A A259396 _Zak Seidov_, Jun 26 2015