OFFSET
1,1
COMMENTS
Conjecture: Terms will always be multiples of ten. Aug 21, 2004: Dean Hickerson proved this.
EXAMPLE
640 is in the sequence because 6^0 + 640 = 641 and 6^1 + 641 = 647, both prime.
CROSSREFS
KEYWORD
base,easy,nonn
AUTHOR
Jason Earls, Aug 18 2004
STATUS
approved