OFFSET
1,2
LINKS
Zak Seidov, Table of n, a(n) for n = 1..50000
EXAMPLE
2 is a term because the sum of the first two semiprimes, 4 and 6, is 10, which is a semiprime.
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Zak Seidov, Feb 23 2004
STATUS
approved