login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A003979 Inverse Möbius transform of A003964. 0
1, 3, 4, 7, 6, 12, 8, 15, 13, 18, 12, 28, 16, 24, 24, 31, 23, 39, 31, 42, 32, 36, 43, 60, 31, 48, 40, 56, 57, 72, 78, 63, 48, 69, 48, 91, 102, 93, 64, 90, 136, 96, 177, 84, 78, 129, 232, 124, 57, 93, 92, 112, 298, 120, 72, 120, 124, 171, 386, 168, 491, 234, 104, 127 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..64.

N. J. A. Sloane, Transforms

FORMULA

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

CROSSREFS

Sequence in context: A143348 A000203 A324545 * A084250 A090128 A086293

Adjacent sequences:  A003976 A003977 A003978 * A003980 A003981 A003982

KEYWORD

nonn,easy,mult

AUTHOR

Marc LeBrun

EXTENSIONS

More terms from Vladeta Jovovic, Dec 01 2001

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 16 15:53 EST 2021. Contains 340206 sequences. (Running on oeis4.)