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 A190773 #4 Mar 30 2012 18:57:29 %S A190773 1,5,8,12,15,18,19,22,25,29,32,35,36,39,42,46,49,53,56,59,63,66,70,73, %T A190773 76,77,80,83,87,90,93,94,97,100,104,107,111,114,117,118,121,124,128, %U A190773 131,134,135,138,141,145,148,152,155,158,162,165,169,172,175,176,179,182,186,189,193,196,199,203,206,210,213,216,217,220,223,227 %N A190773 Positions of 2 in A190770. %C A190773 See A190770. %t A190773 (See A190770.) %Y A190773 Cf. A190770. %K A190773 nonn %O A190773 1,2 %A A190773 _Clark Kimberling_, May 19 2011