A062797 Inverse Moebius transform of f(x) = primorial(x) = A002110(x).

2, 8, 32, 218, 2312, 30068, 510512, 9699908, 223092902, 6469695548, 200560490132, 7420738165088, 304250263527212, 13082761332180548, 614889782588493752, 32589158477199744638, 1922760350154212639072

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 * A369645 A134751 A139014

Adjacent sequences: A062794 A062795 A062796 * A062798 A062799 A062800

Keyword

nonn

Author

Labos Elemer, Jul 19 2001

Status

approved