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 A191776 #4 Mar 30 2012 18:57:33 %S A191776 2,5,9,10,15,17,22,24,25,28,34,36,37,41,47,49,52,53,54,60,67,70,73,74, %T A191776 75,76,83,85,90,92,95,100,101,102,103,106,112,115,120,122,126,131,132, %U A191776 133,134,138,145,147,149,155,157,158,161,163,170,171,172,174 %N A191776 Positions of 2 in A191774; complement of A191775. %C A191776 See A191774. %t A191776 (See A191774.) %Y A191776 Cf. A191774, A191775. %K A191776 nonn %O A191776 1,1 %A A191776 _Clark Kimberling_, Jun 16 2011