A003981 - OEIS

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A003981

Inverse Moebius transform of A003965.

1, 3, 4, 7, 6, 12, 9, 15, 13, 18, 14, 28, 22, 27, 24, 31, 35, 39, 56, 42, 36, 42, 90, 60, 31, 66, 40, 63, 145, 72, 234, 63, 56, 105, 54, 91, 378, 168, 88, 90, 611, 108, 988, 98, 78, 270, 1598, 124, 73, 93, 140, 154, 2585, 120, 84, 135, 224, 435, 4182, 168, 6766, 702 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	LINKS	`N. J. A. Sloane, Transforms`
	FORMULA	`Multiplicative with a(p^e) = (q^(e+1)-1)/(q-1) where q = Fib(pi(p)+1) = A000045(A000720(p)+2). - David W. Wilson, Sep 01, 2001`
	CROSSREFS	`Sequence in context: A084250 A090128 A086293 * A053480 A077580 A069213` `Adjacent sequences: A003978 A003979 A003980 * A003982 A003983 A003984`
	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 13 10:53 EST 2012. Contains 205459 sequences.