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 A253791 #11 Jan 17 2015 23:41:09 %S A253791 0,1,2,4,3,8,32,5,16,64,256,128,12,10,16384,512,9,7,2048,33,257,32768, %T A253791 4194304,8192,8388608,35,8589934592,262144,4194305,67108864,260,19,6, %U A253791 4096,34,18,134217728,2097152,14,1048576,131,4294967296,136,68,295147905179352825856,549755813888,36028797018963968,130,2251799813685248,69 %N A253791 Permutation of natural numbers: a(n) = A244153(A005940(n+1)). %C A253791 When A156552 is represented as a binary tree, then for any node A156552(k) containing n larger than zero, its left child A156552(2k-1) contains 2*a(n). %H A253791 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A253791 a(n) = A244153(A005940(n+1)). %F A253791 As a composition of other related permutations: %F A253791 a(n) = A054429(A253891(A054429(n))). %o A253791 (Scheme) (define (A253791 n) (A244153 (A005940 (+ 1 n)))) %Y A253791 Inverse: A253792. %Y A253791 Similar permutations: A253891, A253883, A005940, A244153, A156552, A054429. %K A253791 nonn %O A253791 0,3 %A A253791 _Antti Karttunen_, Jan 17 2015