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 A215034 #5 Aug 05 2012 15:22:35 %S A215034 1,3,7,8,13,14,19,20,25,27,29,30,33,35,37,40,43,46,49,51,53,56,61,62, %T A215034 66,69,71,75,77,79,80,85,87,89,90,94,99,101,102,105,107,111,113,114, %U A215034 118,122,126,129,131,134,139,140,144,148,151,154,159,161,163,164,169,171,173,174,178,181,184,188,193,194,199,200,204,208,213,215,217,219,221,223,224 %N A215034 Numbers n such that A215029(n) = 1. %H A215034 StackExchange, <a href="http://math.stackexchange.com/questions/176394/a-prime-number-pattern">A prime number pattern</a>, Jul 29 2012. %Y A215034 Cf. A215029-A215035. A031215 is a subsequence. %K A215034 nonn %O A215034 1,2 %A A215034 _N. J. A. Sloane_, Aug 05 2012