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 A153150 #7 Jan 28 2014 00:51:03 %S A153150 0,1,2,3,5,4,6,7,11,9,10,8,12,14,13,15,23,19,21,17,22,18,20,16,24,28, %T A153150 26,30,25,29,27,31,47,39,43,35,45,37,41,33,46,38,42,34,44,36,40,32,48, %U A153150 56,52,60,50,58,54,62,49,57,53,61,51,59,55,63,95,79,87,71,91,75,83,67 %N A153150 Self-inverse permutation of natural numbers: A059893-conjugate of A056539. %H A153150 A. Karttunen, <a href="/A153150/b153150.txt">Table of n, a(n) for n = 0..2047</a> %H A153150 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %Y A153150 a(n) = A059893(A056539(A059893(n))). %K A153150 nonn,base,look %O A153150 0,3 %A A153150 _Antti Karttunen_, Dec 20 2008