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 A264968 #8 Dec 06 2015 21:07:18 %S A264968 0,1,2,3,4,5,6,11,8,9,10,7,12,19,14,15,32,27,18,39,20,33,26,17,24,25, %T A264968 38,23,28,13,30,41,16,21,34,35,36,31,22,29,40,37,42,123,68,75,86,47, %U A264968 96,135,70,81,152,77,46,53,56,107,110,59,60,163,82,99,108,65,142,111,44,51,134,57,72,139,62,147,156,83,58,87,80,69 %N A264968 Permutation of nonnegative integers: a(n) = A246200(A263272(n)). %H A264968 Antti Karttunen, <a href="/A264968/b264968.txt">Table of n, a(n) for n = 0..10000</a> %H A264968 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A264968 a(n) = A246200(A263272(n)). %F A264968 Other identities. For all n >= 0: %F A264968 A000035(a(n)) = A000035(n). [This permutation preserves the parity of numbers.] %o A264968 (Scheme) (define (A264968 n) (A246200 (A263272 n))) %Y A264968 Inverse: A264967. %Y A264968 Cf. A246200, A263272. %Y A264968 Cf. also A264965, A264966. %K A264968 nonn,base %O A264968 0,3 %A A264968 _Antti Karttunen_, Dec 05 2015