A002517 - OEIS

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A002517

Earliest sequence with a(a(n))=3n.

0, 2, 3, 6, 5, 12, 9, 8, 21, 18, 11, 30, 15, 14, 39, 36, 17, 48, 27, 20, 57, 24, 23, 66, 63, 26, 75, 54, 29, 84, 33, 32, 93, 90, 35, 102, 45, 38, 111, 42, 41, 120, 117, 44, 129, 108, 47, 138, 51, 50, 147, 144, 53, 156, 81, 56, 165, 60, 59, 174, 171, 62, 183, 72, 65, 192 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	LINKS	`T. D. Noe, Table of n, a(n) for n=0..1000` `Index entries for sequences of the a(a(n)) = 2n family`
	FORMULA	`a(3n)=3*a(n), a(3n+1)=3n+2, a(3n+2)=9n+3`
	CROSSREFS	`Cf. A002516, A007379, A005843.` `Sequence in context: A001634 A172989 A095113 * A053570 A129647 A136183` `Adjacent sequences: A002514 A002515 A002516 * A002518 A002519 A002520`
	KEYWORD	`nonn,nice,easy`
	AUTHOR	`Colin Mallows colinm(AT)research.avayalabs.com`
	EXTENSIONS	`Formula and more terms from Henry Bottomley (se16(AT)btinternet.com), Apr 27 2000`

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Last modified February 15 19:15 EST 2012. Contains 205852 sequences.