OFFSET
0,2
EXAMPLE
a(12) does not exist, since 66+12k = 2*3*(2k+11) is not a semiprime for any positive k.
CROSSREFS
KEYWORD
fini,full,nonn
AUTHOR
Jason Earls and Amarnath Murthy, Jul 19 2003
EXTENSIONS
Edited by Dean Hickerson, Jul 19 2003
STATUS
approved