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 A235493 #14 Feb 12 2018 17:42:04 %S A235493 0,1,2,4,3,7,8,5,16,6,14,17,12,19,10,28,32,11,9,53,21,20,34,13,64,49, %T A235493 38,24,15,43,56,59,48,68,22,35,18,37,106,76,112,67,40,29,51,42,26,107, %U A235493 128,25,98,44,57,131,36,119,80,212,86,31,84,23,118,30,256 %N A235493 Permutation of natural numbers: a(n) = A235201(A235489(n)). %C A235493 The permutation satisfies A000040(a(n)) = a(A000040(n)) for all positive n except for n=2. %C A235493 In contrast to A235485/A235486 this permutation also contains infinite cycles. %H A235493 Antti Karttunen, <a href="/A235493/b235493.txt">Table of n, a(n) for n = 0..9856</a> %H A235493 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A235493 a(n) = A235201(A235489(n)). %o A235493 (Scheme) (define (A235493 n) (A235201 (A235489 n))) %Y A235493 Inverse: A235494. Cf. also A235201, A235489, A235485/A235486, A234743/A234744. %K A235493 nonn %O A235493 0,3 %A A235493 _Antti Karttunen_, Jan 11 2014 %E A235493 Name and incorrect claim about multiplicativity corrected by _Antti Karttunen_, Feb 12 2018