OFFSET
1,2
EXAMPLE
If n=1 then n*Lucas(n) + 1 = 2 (prime).
If n=66 then n*Lucas(n) + 1 = 4099474525767589 (prime).
MATHEMATICA
Select[Range[9000], PrimeQ[# LucasL[#]+1]&] (* Harvey P. Dale, Nov 10 2011 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Parthasarathy Nambi, Jan 27 2008
EXTENSIONS
More terms from Harvey P. Dale, Nov 10 2011
STATUS
approved