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 A190779 #4 Mar 30 2012 18:57:29 %S A190779 7,14,24,31,38,41,48,55,65,72,82,89,96,106,113,123,130,137,140,147, %T A190779 154,164,171,178,181,188,195,205,212,222,229,236,239,246,253,263,270, %U A190779 277,280,287,294,304,311,321,328,335,345,352,362,369,376,379,386,393,403,410,417,420,427,434,444,451,461 %N A190779 Positions of 3 in A190775. %C A190779 See A190775. %t A190779 (See A190775.) %Y A190779 Cf. A190775. %K A190779 nonn %O A190779 1,1 %A A190779 _Clark Kimberling_, May 19 2011