OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[Table[7n^3-3, {n, 1, 3500}], PrimeQ]
PROG
(Magma) [a: n in [1..400] | IsPrime(a) where a is 7*n^3-3]
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Nov 24 2011
STATUS
approved