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 A190860 #4 Mar 30 2012 18:57:29 %S A190860 1,4,5,8,11,12,15,18,19,22,23,25,26,29,30,32,33,36,37,40,43,44,47,50, %T A190860 51,54,55,57,58,61,62,64,65,68,69,71,72,75,76,79,82,83,86,89,90,93,94, %U A190860 96,97,100,101,103,104,107,108,111,114,115,118,121,122,125,126,128,129,132,133,135,136,139,140,142,143,146,147,150,153,154 %N A190860 Positions of 1 in A190843; complement of A190847. %C A190860 See A190843. %t A190860 (See A190843.) %Y A190860 Cf. A190843, A190847. %K A190860 nonn %O A190860 1,2 %A A190860 _Clark Kimberling_, May 26 2011