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 A164713 #7 Mar 11 2014 01:32:46 %S A164713 1,2,3,4,5,6,7,8,9,10,12,14,15,16,17,21,24,27,28,30,31,32,33,36,42,48, %T A164713 51,54,56,60,62,63,64,65,73,85,96,99,112,119,120,124,126,127,128,129, %U A164713 136,170,192,195,204,219,224,231,238,240,248,252,254,255,256,257,273 %N A164713 A positive integer n is included if all runs of 0's in binary n are of the same length, and if all runs of 1's in binary n are of the same length. %C A164713 Clarification: A binary number consists of "runs" completely of 1's alternating with runs completely of 0's. No two or more runs all of the same digit are adjacent. %C A164713 The length of each run of 1's may be different that the length of each run of 0's. %C A164713 This sequence contains those positive integers in both sequence A164707 and sequence A164710. %C A164713 For those integers in this sequence that each have at least two runs of 0's and at least two runs of 1's, see sequence A164714. %Y A164713 A164707, A164710, A164714 %K A164713 base,nonn %O A164713 1,2 %A A164713 _Leroy Quet_, Aug 23 2009 %E A164713 More terms from _Sean A. Irvine_, Sep 28 2009