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 A043663 #11 Aug 29 2025 16:18:33 %S A043663 14,16,17,18,19,20,21,22,23,24,25,26,27,28,29,31,32,33,34,35,36,37,38, %T A043663 39,40,41,42,43,44,46,47,48,49,50,51,52,53,54,55,56,57,58,59,61,62,63, %U A043663 64,65,66,67,68,69,70,71,72,73,74,76,77,78 %N A043663 Numbers whose base-14 representation has exactly 2 runs. %Y A043663 Subsequence of A043703. %K A043663 nonn,base,changed %O A043663 1,1 %A A043663 _Clark Kimberling_