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 A056018 #8 May 01 2014 02:47:40 %S A056018 0,1,2,3,4,5,7,6,8,10,11,9,12,13,15,16,18,20,14,17,19,21,23,24,26,28, %T A056018 29,31,32,22,25,27,30,33,34,36,37,39,41,42,44,45,47,49,50,52,54,35,38, %U A056018 40,43,46,48,51,53,55,57,58,60,62,63,65,66,68,70,71,73,75,76,78,79,81 %N A056018 Inverse permutation to A056017. %H A056018 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A056018 [seq(nthmember(j, A056017)-1, j=0..233)]; %p A056018 Maple procedure nthmember given in A054426. %K A056018 nonn %O A056018 0,3 %A A056018 _Antti Karttunen_, Jun 08 2000