OFFSET
1,3
LINKS
FORMULA
G.f.: (z/10)[1/(1-z-z^2)^10+1/(1-z^2-z^4)^5-1/(1-z^5-z^10)^2-1/(1-z^10-z^20)].
MAPLE
with(numtheory): f := z->-1/(1-z-z^2): m := proc(r, j) d := divisors(r): W := (1/r)*z*sum(mobius(d[i])*f(z^d[i])^(r/d[i]), i=1..nops(d)): Wser := simplify(series(W, z=0, 80)): coeff(Wser, z^j) end: seq(m(10, j), j=1..35);
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane (njas(AT)research.att.com), Dec 05 2003
EXTENSIONS
Edited by Emeric Deutsch (deutsch(AT)duke.poly.edu), Mar 06 2004
STATUS
approved