id:A118012 - OEIS Search Results

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a(n) = 4*A117384(n) - n; a self-inverse permutation of the natural numbers.

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3, 6, 1, 8, 11, 2, 13, 4, 15, 18, 5, 20, 7, 22, 9, 24, 27, 10, 29, 12, 31, 14, 33, 16, 35, 38, 17, 40, 19, 42, 21, 44, 23, 46, 25, 48, 51, 26, 53, 28, 55, 30, 57, 32, 59, 34, 61, 36, 63, 66, 37, 68, 39, 70, 41, 72, 43, 74, 45, 76, 47, 78, 49, 80, 83, 50, 85, 52, 87, 54, 89, 56 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`A117384 is defined by A117384(n) = A117384(k) when k = 4*A117384(n) - n. A001614 is the Connell sequence generated as: 1 odd, 2 even, 3 odd, .., and A118011 is the complement of A001614.`
	FORMULA	`a(a(n)) = n; a(A118011(n)) = a(4*n - A001614(n)) = A001614(n).`
	CROSSREFS	`Cf. A117384, A001614, A118011.` `Sequence in context: A096602 A083237 A118948 this_sequence A022836 A090911 A108813` `Adjacent sequences: A118009 A118010 A118011 this_sequence A118013 A118014 A118015`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Apr 10 2006`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

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