OFFSET
0,3
EXAMPLE
a(3) = 10, a(4) = 111, a(5) = 1212 is the smallest prime beginning with 10+111 = 121.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Sep 13 2003
EXTENSIONS
More terms from David Wasserman, Jun 03 2005
STATUS
approved