A090639 - OEIS

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A090639

a(0) = 0; a(2n) = 3*a(n), a(2n+1) = a(n) + 1.

0, 1, 3, 2, 9, 4, 6, 3, 27, 10, 12, 5, 18, 7, 9, 4, 81, 28, 30, 11, 36, 13, 15, 6, 54, 19, 21, 8, 27, 10, 12, 5, 243, 82, 84, 29, 90, 31, 33, 12, 108, 37, 39, 14, 45, 16, 18, 7, 162, 55, 57, 20, 63, 22, 24, 9, 81, 28, 30, 11, 36, 13, 15, 6, 729, 244, 246, 83, 252, 85, 87, 30, 270, 91 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	LINKS	`N. J. A. Sloane and J. A. Sellers, On non-squashing partitions, Discrete Math., 294 (2005), 259-274.`
	MAPLE	`S := 3; f := proc(n) global S; option remember; if n=0 then RETURN(0); fi; if n mod 2 = 0 then RETURN(S*f(n/2)); else f((n-1)/2)+1; fi; end;`
	CROSSREFS	`Cf. A087808, A090640.` `Sequence in context: A192492 A104005 A134562 * A178774 A182652 A090880` `Adjacent sequences: A090636 A090637 A090638 * A090640 A090641 A090642`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Dec 14 2003`

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Last modified February 16 08:13 EST 2012. Contains 205893 sequences.