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 A169742 #3 Mar 30 2012 16:51:44 %S A169742 1,2,1,3,2,1,3,6,5,3,2,1,3,6,3,9,8,3,1,4,3,1,2,1,3,6,3,9,6,3,9,18,17, %T A169742 9,4,1,3,2,5,1,2,5,3,2,1,3,2,1,3,6,3,9,6,3,9,18,15,9,6,3,9,18,9,27,26, %U A169742 9,1,10,5,1,4,3,1,4,3,1,4,9,5,4,3,1,4,9,7,4,3,1,2,1,3,6,5,3,2,1,3,6,3,9,6,3 %N A169742 A109671(2n+1). %C A169742 The other bisection of A109671 is of course A109671 again. %H A169742 N. J. A. Sloane, <a href="/A169742/b169742.txt">Table of n, a(n) for n = 0..10000</a> %K A169742 nonn %O A169742 0,2 %A A169742 _N. J. A. Sloane_, May 02 2010