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 A064207 #5 Oct 12 2013 15:16:36 %S A064207 7,8,3,2,0,1,5,4,9,6,15,12,11,10,19,14,13,18,17,16,21,20,27,24,23,22, %T A064207 31,26,25,30,29,28,33,32,39,36,35,34,43,38,37,42,41,40,45,44,51,48,47, %U A064207 46,55,50,49,54,53,52,57,56 %N A064207 Inverse of sequence A004485 considered as a permutation of the nonnegative integers. %C A064207 Since A004485 is arithmetically periodic, this should be too. This is a permutation of the nonnegative integers. %H A064207 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %Y A064207 Cf. A004485. %K A064207 easy,nonn %O A064207 0,1 %A A064207 _Howard A. Landman_, Sep 21 2001