id:A093714 - OEIS Search Results

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a(n) = smallest number coprime to a(n-1), not equal to a(n-1)+1 and not occurring earlier; a(1)=1.

+0
4

1, 3, 2, 5, 4, 7, 6, 11, 8, 13, 9, 14, 17, 10, 19, 12, 23, 15, 22, 21, 16, 25, 18, 29, 20, 27, 26, 31, 24, 35, 32, 37, 28, 33, 38, 41, 30, 43, 34, 39, 44, 47, 36, 49, 40, 51, 46, 45, 52, 55, 42, 53, 48, 59, 50, 57, 56, 61, 54, 65, 58, 63, 62, 67, 60, 71, 64, 69, 68, 73, 66, 79 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`Permutation of natural numbers with inverse A093715: a(A093715(n))=A093715(a(n))=n.`
	LINKS	`Index entries for sequences that are permutations of the natural numbers`
	CROSSREFS	`Cf. A085229.` `Sequence in context: A085230 A093715 A085229 this_sequence A080261 A138310 A137707` `Adjacent sequences: A093711 A093712 A093713 this_sequence A093715 A093716 A093717`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Apr 12 2004`

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Last modified December 9 18:50 EST 2009. Contains 170568 sequences.

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