A126009 - OEIS

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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 (list; graph; refs; listen; history; internal format)

	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	`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: A076240 A099644 A058113 * A091858 A070165 A203709` `Adjacent sequences: A126006 A126007 A126008 * A126010 A126011 A126012`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen (His-Firstname.His-Surname(AT)gmail.com), Jan 02 2007`
	EXTENSIONS	`Typos corrected by Franklin T. Adams-Watters (FrankTAW(AT)Netscape.net), Apr 06 2009`

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Last modified February 16 21:16 EST 2012. Contains 205971 sequences.