id:A003973 - OEIS Search Results

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Inverse Moebius transform of A003961.

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1, 4, 6, 13, 8, 24, 12, 40, 31, 32, 14, 78, 18, 48, 48, 121, 20, 124, 24, 104, 72, 56, 30, 240, 57, 72, 156, 156, 32, 192, 38, 364, 84, 80, 96, 403, 42, 96, 108, 320, 44, 288, 48, 182, 248, 120, 54, 726, 133, 228, 120, 234, 60, 624, 112, 480, 144, 128, 62, 624, 68 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`Multiplicative with a(p^e) = (q^(e+1)-1)/(q-1) where q = nextPrime(p).. - David W. Wilson, Sep 01, 2001`
	CROSSREFS	`Sequence in context: A061072 A130435 A028444 this_sequence A034747 A074165 A137821` `Adjacent sequences: A003970 A003971 A003972 this_sequence A003974 A003975 A003976`
	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 July 25 07:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research