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 A237883 #6 Feb 23 2014 09:32:58 %S A237883 1,3,6,7,11,13,14,15,22,23,26,27,28,29,30,31,39,43,45,46,47,53,54,55, %T A237883 57,58,59,60,61,62,63,78,79,86,87,90,91,92,93,94,95,103,106,107,109, %U A237883 110,111,114,115,116,117,118,119,120,121,122,123,124,125,126,127,143 %N A237883 Numbers k such that LR0(k) < LR1(k), where LR0(k) = A087117(k) is the length of the longest run of zeros in the binary representation of k, LR1(k) = A038374(k) is the length of the longest run of ones. %Y A237883 Cf. A038374, A087117. %Y A237883 Cf. A090050 (numbers k such that LR0(k) = LR1(k)). %Y A237883 Cf. A237882 (numbers k such that LR0(k) > LR1(k)). %K A237883 nonn,base %O A237883 1,2 %A A237883 _Alex Ratushnyak_, Feb 14 2014