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A062797 Inverse Moebius transform of f(x) = primorial(x) = A002110(x). 0
2, 8, 32, 218, 2312, 30068, 510512, 9699908, 223092902, 6469695548, 200560490132, 7420738165088, 304250263527212, 13082761332180548, 614889782588493752, 32589158477199744638, 1922760350154212639072 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..16.

FORMULA

a(n) = Sum_{d|n} q(d), where q(x) = A002110(x).

EXAMPLE

n=6: divisors = {1,2,3,6}; 2 + 2*3 + 2*3*5 + 2*3*5*7*11*13 = 2 + 6 + 30 + 30030 = 30068.

CROSSREFS

Cf. A002110.

Sequence in context: A206303 A048855 A262480 * A134751 A139014 A063505

Adjacent sequences:  A062794 A062795 A062796 * A062798 A062799 A062800

KEYWORD

nonn

AUTHOR

Labos Elemer, Jul 19 2001

STATUS

approved

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Last modified April 23 06:08 EDT 2019. Contains 322381 sequences. (Running on oeis4.)