id:A092486 - OEIS Search Results

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Take natural numbers, exchange first and third quadrisection.

+0
2

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

	OFFSET	`0,1`
	LINKS	`Index entries for sequences that are permutations of the natural numbers`
	FORMULA	`G.f.: [3-4x+3x^2]/[(1+x^2)(1-x)^2].` `a(4n) = 4n+3, a(4n+1) = 4n+2, a(4n+2) = 4n+1, a(4n+3) = 4n+4.`
	CROSSREFS	`Cf. A080412, A064429, A074066, A080782.` `Sequence in context: A104509 A117212 A105033 this_sequence A119263 A028412 A077819` `Adjacent sequences: A092483 A092484 A092485 this_sequence A092487 A092488 A092489`
	KEYWORD	`nonn`
	AUTHOR	`Ralf Stephan, Apr 04 2004`

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

AT&T Labs Research