OFFSET
1,5
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..65537
PROG
(PARI) A181587(n) = if(n%2, sum(k=1, n, moebius(k)), 0); \\ Antti Karttunen, Sep 30 2018
CROSSREFS
KEYWORD
sign,look
AUTHOR
Mats Granvik, Oct 31 2010
EXTENSIONS
Definition corrected and more terms by Antti Karttunen, Sep 30 2018
Incorrect g.f. removed by Georg Fischer, Nov 09 2022
STATUS
approved