A003979 - OEIS

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A003979

Inverse Möbius transform of A003964.

1, 3, 4, 7, 6, 12, 8, 15, 13, 18, 12, 28, 16, 24, 24, 31, 23, 39, 31, 42, 32, 36, 43, 60, 31, 48, 40, 56, 57, 72, 78, 63, 48, 69, 48, 91, 102, 93, 64, 90, 136, 96, 177, 84, 78, 129, 232, 124, 57, 93, 92, 112, 298, 120, 72, 120, 124, 171, 386, 168, 491, 234, 104, 127 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	LINKS	`Table of n, a(n) for n=1..64.` `N. J. A. Sloane, Transforms`
	FORMULA	`Multiplicative with a(p^e) = (q^(e+1)-1)/(q-1) where q = partition(pi(p)+1) = A000041(A000720(p)+1). - David W. Wilson, Sep 01 2001`
	CROSSREFS	`Sequence in context: A143348 A000203 A324545 * A084250 A090128 A086293` `Adjacent sequences: A003976 A003977 A003978 * A003980 A003981 A003982`
	KEYWORD	`nonn,easy,mult`
	AUTHOR	`Marc LeBrun`
	EXTENSIONS	`More terms from Vladeta Jovovic, Dec 01 2001`
	STATUS	`approved`

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Last modified January 16 15:53 EST 2021. Contains 340206 sequences. (Running on oeis4.)