OFFSET
1,1
EXAMPLE
Sum is (1/4)^1 + (1/6)^2 + (1/8)^3 + (1/9)^4 + (1/10)^5 + ... = 0.279893663...
MATHEMATICA
k = s = 0; Do[If[ !PrimeQ[n], k++; s += (1/n)^k], {n, 2, 100}]; First[RealDigits[N[s, 100]]]
CROSSREFS
KEYWORD
cons,nonn
AUTHOR
Ryan Propper, Jul 21 2006
STATUS
approved