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 A100282 #10 Sep 06 2017 21:28:05 %S A100282 0,1,2,3,5,4,7,6,10,11,8,9,15,14,13,12,20,21,22,23,17,16,19,18,30,31, %T A100282 28,29,27,26,25,24,40,41,42,43,45,44,47,46,34,35,32,33,39,38,37,36,60, %U A100282 61,62,63,57,56,59,58,54,55,52,53,51,50,49,48,81,80,83,82,84,85,86,87,91 %N A100282 a(n) = A100280(A100280(n)). %C A100282 Permutation of the natural numbers with inverse A100281; %C A100282 A064706(n) = a(n) for n<64. %H A100282 Ivan Neretin, <a href="/A100282/b100282.txt">Table of n, a(n) for n = 0..8191</a> %H A100282 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %K A100282 nonn,look %O A100282 0,3 %A A100282 _Reinhard Zumkeller_, Nov 11 2004