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A003978 Möbius transform of A003964. 0
1, 1, 2, 2, 4, 2, 6, 4, 6, 4, 10, 4, 14, 6, 8, 8, 21, 6, 29, 8, 12, 10, 41, 8, 20, 14, 18, 12, 55, 8, 76, 16, 20, 21, 24, 12, 100, 29, 28, 16, 134, 12, 175, 20, 24, 41, 230, 16, 42, 20, 42, 28, 296, 18, 40, 24, 58, 55, 384, 16, 489, 76, 36, 32, 56, 20, 626, 42, 82, 24, 791, 24 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..72.

FORMULA

Multiplicative with a(p^e) = (q-1)q^(e-1) were q = partition(pi(p)+1) = A000041(A000720(p)+1). - David W. Wilson, Sep 01 2001

CROSSREFS

Sequence in context: A152455 A293484 A000010 * A122645 A122646 A028496

Adjacent sequences:  A003975 A003976 A003977 * A003979 A003980 A003981

KEYWORD

nonn,mult

AUTHOR

Marc LeBrun

EXTENSIONS

More terms from David W. Wilson, Aug 29 2001

STATUS

approved

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Last modified February 24 13:18 EST 2018. Contains 299623 sequences. (Running on oeis4.)