A201791 Primes of the form 6n^2 - 5.

19, 211, 379, 859, 1009, 1171, 1531, 2161, 3169, 4051, 6529, 8209, 13249, 14401, 15601, 17491, 19489, 23059, 24571, 27739, 30241, 34651, 35569, 37441, 42331, 44371, 47521, 49681, 55291, 63649, 64891, 67411, 82129, 84961, 92251, 96769

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..5000

Mathematica

 Select[Table[6n^2-5, {n, 1, 700}], PrimeQ]

Prog

(Magma) [a: n in [1..200] | IsPrime(a) where a is 6*n^2-5];

Crossrefs

Sequence in context: A022647 A032613 A199132 * A099663 A202665 A115854

Adjacent sequences: A201788 A201789 A201790 * A201792 A201793 A201794

Keyword

nonn,easy

Author

Vincenzo Librandi, Dec 05 2011

Status

approved