0,3

Table of n, a(n) for n=0..49.

G.f.: Sum_{n>=0} x^n/Product_{d | gcd(n,d)=1} (1-x^d).

Sequence in context: A191930 A202113 A113243 * A308189 A074885 A215231

Adjacent sequences: A130687 A130688 A130689 * A130691 A130692 A130693

easy,nonn

Vladeta Jovovic, Jul 01 2007

approved