OFFSET
0,2
FORMULA
a(0) = 0, for n>0: a(n) = a(n-1) + A035250(n).
EXAMPLE
a(3)=5, as sums of (1,1), (2,0), (2,1), (3,0) and (3,2) give 5 primes.
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Jan 07 2002
STATUS
approved