OFFSET
1,1
EXAMPLE
a(2) = 3 because 1/pp(2) + 1/pp(3) = 1/4 + 1/8 = 3/8.
CROSSREFS
KEYWORD
easy,nonn,frac
AUTHOR
Zak Seidov, Oct 11 2002
EXTENSIONS
Edited by Dean Hickerson, Oct 15 2002
STATUS
approved