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 A268822 #5 Feb 17 2016 17:23:24 %S A268822 0,1,3,2,9,8,5,4,13,12,17,16,7,6,15,14,21,20,25,24,31,30,23,22,11,10, %T A268822 27,26,33,32,29,28,37,36,41,40,47,46,39,38,59,58,43,42,49,48,45,44,19, %U A268822 18,51,50,57,56,53,52,61,60,65,64,55,54,63,62,69,68,73,72,79,78,71,70,91,90,75,74,81,80,77,76,115,114,83,82 %N A268822 Permutation of nonnegative integers: a(0) = 0, a(n) = A268718(1+A268718(n-1)). %C A268822 The "shifted square" of permutation A268718. %H A268822 Antti Karttunen, <a href="/A268822/b268822.txt">Table of n, a(n) for n = 0..8191</a> %H A268822 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A268822 a(0) = 0, for n >= 1, a(n) = A268718(1+A268718(n-1)). %o A268822 (Scheme) (define (A268822 n) (if (zero? n) n (+ 1 (A268718 (+ -1 (A268718 n)))))) %Y A268822 Inverse: A268821. %Y A268822 Cf. A268718, A268824. %Y A268822 Row 2 of array A268830. %K A268822 nonn %O A268822 0,3 %A A268822 _Antti Karttunen_, Feb 14 2016