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A134696
Numbers n such that n*Lucas(n) + 1 is prime.
0
1, 2, 3, 4, 6, 10, 42, 48, 56, 66, 70, 86, 108, 126, 134, 214, 248, 459, 1479, 1722, 3076, 5064, 5102, 7602
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