login
A334091
a(1) = 0, then after the first differences of A329697.
4
0, 0, 1, -1, 1, 0, 1, -2, 2, -1, 1, -1, 1, 0, 0, -2, 1, 1, 1, -2, 2, -1, 1, -2, 1, 0, 1, -1, 1, -1, 1, -3, 3, -2, 2, -1, 1, 0, 0, -2, 1, 1, 1, -2, 1, 0, 1, -3, 3, -2, 0, 0, 1, 0, 0, -1, 2, -1, 1, -2, 1, 0, 1, -4, 3, 0, 1, -3, 3, -1, 1, -2, 1, 0, 0, 0, 1, -1, 1, -3, 3, -2, 1, 0, -1, 2, 0, -2, 1, 0, 1, -1, 1, 0, 0, -3, 1, 2, 0, -2, 1, -1, 1, -1, 2
OFFSET
1,8
LINKS
FORMULA
a(1) = 0, and for n > 1, a(n) = A329697(n) - A329697(n-1).
a(n) = A334090(n) - A334195(n).
PROG
(PARI)
A329697(n) = if(!bitand(n, n-1), 0, 1+A329697(n-(n/vecmax(factor(n)[, 1]))));
A334091(n) = if(1==n, 0, A329697(n)-A329697(n-1));
CROSSREFS
KEYWORD
sign
AUTHOR
Antti Karttunen, Apr 17 2020
STATUS
approved