id:A151687 - OEIS Search Results

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G.f.: x + x^2 * Prod_{ n >= 0} (1 + x^(2^n-1) + x^(2^n)).

+0
3

0, 1, 2, 3, 3, 3, 5, 6, 4, 3, 5, 6, 6, 8, 11, 10, 5, 3, 5, 6, 6, 8, 11, 10, 7, 8, 11, 12, 14, 19, 21, 15, 6, 3, 5, 6, 6, 8, 11, 10, 7, 8, 11, 12, 14, 19, 21, 15, 8, 8, 11, 12, 14, 19, 21, 17, 15, 19, 23, 26, 33, 40, 36, 21, 7, 3, 5, 6, 6, 8, 11, 10, 7, 8, 11, 12, 14, 19, 21, 15, 8, 8 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`Apart from initial terms and offset, same as A160573, but has a slightly nice recurrence.`
	FORMULA	`a(0) = 0, a(2^k) = k+1; for n >= 3, if n = 2^i + j, 1 <= j < 2^i, a(n) = a(j) + a(j+1).`
	MAPLE	`G:= x + x^2 * mul( 1 + x^(2^n-1) + x^(2^n), n=0..20);`
	CROSSREFS	`Rows of triangle in A118977 converge to this.` `Sequence in context: A141784 A014202 A145281 this_sequence A160573 A141418 A130499` `Adjacent sequences: A151684 A151685 A151686 this_sequence A151688 A151689 A151690`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Jun 03 2009`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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