0,1

Table of n, a(n) for n=0..87.

Equals 1*sin(1/1) * 2*sin(1/2) * 3*sin(1/3) * 4*sin(1/4) * 5*sin(1/5) * ...

0.75536338851857321406336498617047655...

(PARI) exp(-sumpos(n=1, -log(n*sin(1/n))))

Sequence in context: A010510 A258042 A289003 * A138312 A138313 A152115

Adjacent sequences: A295216 A295217 A295218 * A295220 A295221 A295222

nonn,cons

Michal Paulovic, Nov 17 2017

Terms corrected by Jinyuan Wang, Jul 21 2020

approved