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 A064211 #5 Oct 12 2013 15:16:36 %S A064211 10,3,11,6,7,8,0,1,2,4,5,19,15,9,17,18,12,13,14,27,16,24,30,31,20,21, %T A064211 22,23,35,25,26,29,28,36,42,43,32,33,34,47,48,37,38,39,40,41,54,55,44, %U A064211 45,46,59,60,49,50,51,52,53 %N A064211 Inverse of sequence A004487 considered as a permutation of the nonnegative integers. %C A064211 Since A004486 is arithmetically periodic, this should be too. This is a permutation of the nonnegative integers. %H A064211 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %Y A064211 Cf. A004487. %K A064211 easy,nonn %O A064211 0,1 %A A064211 _Howard A. Landman_, Sep 21 2001