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 A190678 #4 Mar 30 2012 18:57:28 %S A190678 2,5,6,9,13,17,20,21,24,28,32,35,36,39,43,47,50,51,54,58,61,62,65,69, %T A190678 73,76,77,80,84,88,91,92,95,99,103,106,110,114,117,118,121,125,129, %U A190678 132,133,136,140,144,147,148,151,155,158,159,162,166,170,173,174,177,181,185,188,189,192,196,200,203,204,207,211,214,215,218 %N A190678 Positions of 1 in A190676. %C A190678 See A190676. %t A190678 (See A190676.) %Y A190678 Cf. A190676. %K A190678 nonn %O A190678 1,1 %A A190678 _Clark Kimberling_, May 16 2011