A126009 Self-inverse permutation of integers induced when A106485 is restricted to A126011.

0, 2, 1, 3, 9, 10, 8, 12, 6, 4, 5, 11, 7, 17, 18, 19, 20, 13, 14, 15, 16, 21

Offset

0,2

Comments

The Scheme-program given cannot in practice compute this further than n=21, as A106485(A126011(22))=36893488147419103232. However, the further terms could be deduced by other means. This sequence is a permutation of the nonnegative integers because combinatorial games form a group under (game) addition and each game has a well-defined, unique negative.

Links

Table of n, a(n) for n=0..21.

A. Karttunen, Scheme-program for computing this sequence.

Index entries for sequences that are permutations of the natural numbers

Formula

a(n) = A126013(A106485(A126011(n))).

Crossrefs

Sequence in context: A359648 A237765 A249632 * A301282 A246063 A332064

Adjacent sequences: A126006 A126007 A126008 * A126010 A126011 A126012

Keyword

nonn

Author

Antti Karttunen, Jan 02 2007

Extensions

Typos corrected by Franklin T. Adams-Watters, Apr 06 2009

Status

approved