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 A268826 #5 Feb 17 2016 17:24:06 %S A268826 0,1,3,2,6,7,4,5,18,19,16,17,10,11,8,9,26,27,24,25,34,35,32,33,14,15, %T A268826 12,13,30,31,28,29,42,43,40,41,50,51,48,49,62,63,60,61,46,47,44,45,22, %U A268826 23,20,21,54,55,52,53,66,67,64,65,58,59,56,57,74,75,72,73,82,83,80,81,94,95,92,93,78,79,76,77,118,119,116,117,86,87 %N A268826 Permutation of nonnegative integers: a(0) = 0, a(n) = 1 + A268824(A268718(n)-1). %C A268826 The "fourth shifted power" of permutation A268718. %H A268826 Antti Karttunen, <a href="/A268826/b268826.txt">Table of n, a(n) for n = 0..8191</a> %H A268826 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A268826 a(0) = 0, and for n >= 1, a(n) = 1 + A268824(A268718(n)-1). %o A268826 (Scheme) (define (A268826 n) (if (zero? n) n (+ 1 (A268824 (+ -1 (A268718 n)))))) %Y A268826 Inverse: A268825. %Y A268826 Cf. A268718, A268824, A268828. %Y A268826 Row 4 of array A268830. %K A268826 nonn %O A268826 0,3 %A A268826 _Antti Karttunen_, Feb 14 2016