Function: sumeulerrat
Section: sums
C-Name: sumeulerrat
Prototype: GDGD2,L,p
Help: sumeulerrat(F,{s=1},{a=2}): sum from primes p = a to infinity of F(p^s),
 where F is a rational function.
Doc: $\sum_{p\ge a, p prime}F(p^s)$, where $F$ is a rational function.
 \bprog
 ? sumeulerrat(1/q)
 %1 = 0.45224742004106549850654336483224793418
 @eprog
