id:A130044 - OEIS Search Results

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a(0)=1. a(n) = number of earlier terms which are coprime to the largest odd divisor of n.

+0
2

1, 1, 2, 3, 4, 5, 5, 7, 8, 8, 8, 11, 11, 13, 13, 12, 16, 17, 16, 19, 18, 17, 20, 23, 21, 22, 24, 22, 26, 29, 22, 31, 32, 23, 32, 30, 30, 37, 37, 29, 35, 41, 33, 43, 38, 33, 44, 47, 39, 46, 44, 39, 47, 53, 43, 40, 53, 44, 56, 59, 44, 61, 61, 49, 64, 53, 46, 67, 66, 53 (list; graph; listen)

	OFFSET	`0,3`
	LINKS	`Diana Mecum, Table of n, a(n) for n = 0..1000` `Leroy Quet, Home Page (listed in lieu of email address)`
	EXAMPLE	`The largest odd divisor of 12 is 3. So a(12) is the number of terms from among (a(0),a(1),a(2),...a(11)) which are coprime to 3, which is 11.`
	CROSSREFS	`Cf. A130043, A000265.` `Sequence in context: A073757 A088468 A049448 this_sequence A156229 A082081 A008475` `Adjacent sequences: A130041 A130042 A130043 this_sequence A130045 A130046 A130047`
	KEYWORD	`nonn`
	AUTHOR	`Leroy Quet May 02 2007`
	EXTENSIONS	`More terms from Diana Mecum (diana.mecum(AT)gmail.com), Jun 01 2007`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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