OFFSET
3,2
COMMENTS
FORMULA
a(n) = numerator[ Sum[ 1/i^2, {i,1,(Prime[n]-1)/2} ] ] / Prime[n] for n > 3.
EXAMPLE
MATHEMATICA
Table[Numerator[Sum[1/i^2, {i, 1, (Prime[n]-1)/2}]]/Prime[n], {n, 3, 25}]
CROSSREFS
KEYWORD
frac,nonn
AUTHOR
Alexander Adamchuk, Jun 07 2006
STATUS
approved