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 A189633 #4 Mar 30 2012 18:57:24 %S A189633 1,2,4,5,8,9,10,11,13,14,17,18,20,21,22,23,25,26,28,29,31,32,35,36,37, %T A189633 38,40,41,44,45,47,48,49,50,52,53,56,57,58,59,61,62,64,65,67,68,71,72, %U A189633 73,74,76,77,80,81,82,83,85,86,89,90,91,92,94,95,98,99,101,102,103,104,106,107,109,110,112,113,116,117,118,119,121,122,125,126,128,129,130,131,133,134 %N A189633 Positions of 0 in A189632; complement of A189634. %C A189633 See A189632. %t A189633 (See A189632.) %Y A189633 Cf. A189632, A189634, A189635. %K A189633 nonn %O A189633 1,2 %A A189633 _Clark Kimberling_, Apr 24 2011