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 A112251 #3 Mar 30 2012 18:50:53 %S A112251 5,7,10,13,17,21,25,29,36,41,46,51,56,61,67,73,79,85,91,97,103,109, %T A112251 115,121,127,134,141,148,155,162,169,176,183,190,197,204,211,218,225, %U A112251 232,239,246,253,257,265,273,281,289,297,305,313,321,329,337,345,353,361 %N A112251 Numbers m such that m mod log_2(m) = 1. %C A112251 A112248(a(n)) = 1; subsequence of A112250. %Y A112251 Cf. A000523. %K A112251 nonn %O A112251 1,1 %A A112251 _Reinhard Zumkeller_, Aug 30 2005