login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A328730 Dirichlet g.f.: Product_{k>=2} (1 - k^(-s))^k. 1
1, -2, -3, -3, -5, 0, -7, 0, -6, 0, -11, 9, -13, 0, 0, 2, -17, 12, -19, 15, 0, 0, -23, 18, -15, 0, -1, 21, -29, 30, -31, 12, 0, 0, 0, 33, -37, 0, 0, 30, -41, 42, -43, 33, 30, 0, -47, 30, -28, 30, 0, 39, -53, 38, 0, 42, 0, 0, -59, 60, -61, 0, 42, 14, 0, 66, -67, 51, 0, 70 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Dirichlet inverse of A050367.

LINKS

Table of n, a(n) for n=1..70.

FORMULA

a(1) = 1; a(n) = -Sum_{d|n, d<n} A050367(n/d) * a(d).

CROSSREFS

Cf. A050367, A114592, A161918 (positions of 0's), A328731.

Sequence in context: A240376 A118963 A127641 * A106821 A065863 A341931

Adjacent sequences:  A328727 A328728 A328729 * A328731 A328732 A328733

KEYWORD

sign

AUTHOR

Ilya Gutkovskiy, Oct 26 2019

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 9 18:55 EDT 2022. Contains 356026 sequences. (Running on oeis4.)