A003977 - OEIS

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A003977

Inverse Moebius transform of A003963.

1, 2, 3, 3, 4, 6, 5, 4, 7, 8, 6, 9, 7, 10, 12, 5, 8, 14, 9, 12, 15, 12, 10, 12, 13, 14, 15, 15, 11, 24, 12, 6, 18, 16, 20, 21, 13, 18, 21, 16, 14, 30, 15, 18, 28, 20, 16, 15, 21, 26, 24, 21, 17, 30, 24, 20, 27, 22, 18, 36, 19, 24, 35, 7, 28, 36, 20, 24, 30, 40, 21, 28, 22, 26 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	FORMULA	`Multiplicative with a(p^e) = e+1 if p = 2; (q^(e+1)-1)/(q-1) if p > 2; where q = pi(p) = A000720(p). - David W. Wilson, Sep 01, 2001`
	CROSSREFS	`Sequence in context: A200763 A203291 A159999 * A003971 A200668 A200469` `Adjacent sequences: A003974 A003975 A003976 * A003978 A003979 A003980`
	KEYWORD	`nonn,easy,mult`
	AUTHOR	`Marc LeBrun (mlb(AT)well.com)`
	EXTENSIONS	`More terms from David W. Wilson (davidwwilson(AT)comcast.net), Aug 29 2001`

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Last modified February 15 03:22 EST 2012. Contains 205694 sequences.