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 A190685 #4 Mar 30 2012 18:57:28 %S A190685 3,6,7,10,14,18,21,22,25,29,33,36,40,44,47,48,51,55,59,62,63,66,70,74, %T A190685 77,78,81,85,88,89,92,96,100,103,104,107,111,115,118,119,122,126,130, %U A190685 133,134,137,141,144,145,148,152,156,159,160,163,167,171,174,175,178,182,186,189,190,193,197,200,201,204,208,212,215,216,219 %N A190685 Positions of 1 in A190683. %C A190685 See A190683. %t A190685 (See A190683.) %Y A190685 Cf. A190683. %K A190685 nonn %O A190685 1,1 %A A190685 _Clark Kimberling_, May 17 2011