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A003981 Inverse Möbius transform of A003965. 0
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; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..62.

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 * A324108 A324054 A214413

Adjacent sequences:  A003978 A003979 A003980 * A003982 A003983 A003984

KEYWORD

nonn,easy,mult

AUTHOR

Marc LeBrun

EXTENSIONS

More terms from David W. Wilson, Aug 29 2001

STATUS

approved

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Last modified March 20 13:18 EDT 2019. Contains 321345 sequences. (Running on oeis4.)