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 A074368 #4 Mar 30 2012 18:39:52 %S A074368 1,3,7,5,11,17,13,9,19,21,15,25,27,31,29,23,35,37,33,39,43,45,51,49, %T A074368 47,41,55,53,59,67,63,73,57,69,61,65,71,77,79,83,89,91,75,81,85,87,93, %U A074368 97,95,101,109,113,115,107,103,119,121,105,117,111,99,123,127,129,133,135 %N A074368 Rearrangement of odd numbers such that a(k) + a(k+1) + 1 is a prime for all k. %Y A074368 Cf. A073661. %K A074368 nonn %O A074368 1,2 %A A074368 _Hans Havermann_, Sep 23 2002