id:A003972 - OEIS Search Results

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Moebius transform of A003961.

+0
1

1, 2, 4, 6, 6, 8, 10, 18, 20, 12, 12, 24, 16, 20, 24, 54, 18, 40, 22, 36, 40, 24, 28, 72, 42, 32, 100, 60, 30, 48, 36, 162, 48, 36, 60, 120, 40, 44, 64, 108, 42, 80, 46, 72, 120, 56, 52, 216, 110, 84, 72, 96, 58, 200, 72, 180, 88, 60, 60, 144, 66, 72, 200, 486, 96, 96, 70 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`Multiplicative with a(p^e) = (q-1)q^(e-1) where q = nextPrime(p).. - David W. Wilson, Sep 01, 2001`
	CROSSREFS	`Sequence in context: A082990 A099188 A085271 this_sequence A023853 A056526 A049066` `Adjacent sequences: A003969 A003970 A003971 this_sequence A003973 A003974 A003975`
	KEYWORD	`nonn,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 November 25 20:09 EST 2009. Contains 167514 sequences.

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