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 A064206 #5 Oct 12 2013 15:16:36 %S A064206 5,6,4,0,1,2,3,11,10,7,8,13,9,17,16,12,14,19,15,23,22,18,20,25,21,29, %T A064206 28,24,26,31,27,35,34,30,32,37,33,41,40,36,38,43,39,47,46,42,44,49,45, %U A064206 53,52,48,50,55,51,59,58,54,56,61,57 %N A064206 Inverse of sequence A004484 considered as a permutation of the nonnegative integers. %C A064206 Since A004484 is arithmetically periodic, this should be too. This sequence is a permutation of the nonnegative integers (each of the numbers 0, 1, 2 ... appears exactly once in it). %H A064206 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %Y A064206 Cf. A004484. %K A064206 easy,nonn %O A064206 0,1 %A A064206 _Howard A. Landman_, Sep 21 2001