OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[Table[7n^3-9, {n, 2, 4000}], PrimeQ]
PROG
(Magma) [a: n in [2..500] | IsPrime(a) where a is 7*n^3-9]
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Nov 26 2011
STATUS
approved