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 A245445 #6 Jul 22 2014 16:01:15 %S A245445 0,1,3,2,5,6,4,7,15,8,12,11,10,13,9,14,17,30,22,25,26,21,29,18,16,31, %T A245445 23,24,27,20,28,19,51,44,60,35,36,59,43,52,48,47,63,32,39,56,40,55,46, %U A245445 49,33,62,57,38,54,41,45,50,34,61,58,37,53,42,85,106,74,117,122,69 %N A245445 Permutation of nonnegative integers: a(n) = A056539(A193231(n)). %H A245445 Antti Karttunen, <a href="/A245445/b245445.txt">Table of n, a(n) for n = 0..1023</a> %H A245445 <a href="/index/Bi#binary">Index entries for sequences related to binary expansion of n</a> %H A245445 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A245445 a(n) = A056539(A193231(n)). %o A245445 (Scheme) (define (A245445 n) (A056539 (A193231 n))) %Y A245445 Inverse: A245446. %Y A245445 Cf. A056539, A193231, A245443, A245444. %K A245445 nonn %O A245445 0,3 %A A245445 _Antti Karttunen_, Jul 22 2014