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 A065265 #5 May 01 2014 02:42:46 %S A065265 3,1,7,2,13,5,15,4,25,6,27,11,29,9,31,8,49,10,51,12,53,14,55,23,57,21, %T A065265 59,19,61,17,63,16,97,18,99,20,101,22,103,24,105,26,107,28,109,30,111, %U A065265 47,113,45,115,43,117,41,119,39,121,37,123,35,125,33,127,32,193,34,195 %N A065265 A065263 conjugated with A059893, inverse of A065266. %H A065265 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A065265 a(n) = A059893(A065263(A059893(n))) %K A065265 nonn %O A065265 1,1 %A A065265 _Antti Karttunen_, Oct 28 2001