RE: [math-fun] sum phi(n)/2^n

Would someone check my hand calculation,

1.367630801985022350790508146

Maple gives (with 100 digits) 1.3676308019850223507905081462130881390748919989627948529565984637621567 10397668744550379007054282801 Alec Mihailovs http://webpages.shepherd.edu/amihailo/