A266412 Inverse permutation to A266411.

1, 2, 4, 3, 8, 5, 7, 6, 16, 9, 15, 10, 12, 11, 14, 13, 32, 17, 31, 18, 30, 19, 21, 20, 27, 22, 24, 23, 26, 25, 29, 28, 64, 33, 63, 34, 62, 35, 61, 36, 38, 37, 58, 39, 57, 40, 42, 41, 48, 43, 45, 44, 47, 46, 54, 49, 51, 50, 53, 52, 56, 55, 60, 59, 128, 65, 127, 66, 126, 67, 125, 68, 124, 69, 71, 70, 121, 72, 120, 73, 119, 74, 76, 75

Offset

1,2

Links

Antti Karttunen, Table of n, a(n) for n = 1..16384

Index entries for Hofstadter-type sequences

Index entries for sequences that are permutations of the natural numbers

Formula

Conjecture: a(2^(k-1)+1) = 2^k, for k > 0. - Ruud H.G. van Tol, Apr 03 2026 (see A004001)

Example

From Ruud H.G. van Tol, Apr 03 2026: (Start)
Sequence as a triangle:
  1;
  2;
  4, 3;
  8, 5, 7, 6;
  16, 9, 15, 10, 12, 11, 14, 13;
  32, 17, 31, 18, 30, 19, 21, 20, 27, 22, 24, 23, 26, 25, 29, 28;
  ...
(End)

Prog

(Scheme) ;; Use the Scheme-code given in A266411.

Crossrefs

Inverse: A266411.

Cf. A004001.

Sequence in context: A371591 A048679 A342794 * A246365 A331585 A191729

Adjacent sequences: A266409 A266410 A266411 * A266413 A266414 A266415

Keyword

nonn

Author

Antti Karttunen, Dec 29 2015

Status

approved