A201612 Primes of the form 8n^2 + 5.

5, 13, 37, 293, 397, 653, 2053, 3533, 3877, 5413, 6277, 6733, 10957, 14797, 15493, 19213, 23333, 25997, 30757, 36997, 48677, 55117, 56453, 69197, 75277, 76837, 86533, 98573, 100357, 109517, 117133, 129037, 139397, 143653, 154573

Offset

1,1

Links

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

Mathematica

Select[Table[8n^2+5, {n, 0, 1000}], PrimeQ]

Prog

(Magma) [a: n in [0..300] | IsPrime(a) where a is 8*n^2+5];

Crossrefs

Sequence in context: A146925 A146452 A146062 * A129924 A360797 A080143

Adjacent sequences: A201609 A201610 A201611 * A201613 A201614 A201615

Keyword

nonn,easy

Author

Vincenzo Librandi, Dec 03 2011

Status

approved