A201476 Primes of the form 2n^2 + 9.

11, 17, 41, 59, 107, 137, 251, 347, 401, 521, 587, 809, 977, 1259, 1361, 1931, 2459, 2897, 3209, 3371, 3881, 4241, 5009, 5417, 6737, 6971, 7451, 9257, 10091, 10667, 11867, 12491, 12809, 13457, 15497, 16937, 17681, 18059, 20411, 21227

Offset

1,1

Links

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

Mathematica

Select[Table[2n^2+9, {n, 0, 700}], PrimeQ]

Prog

(Magma) [a: n in [0..400] | IsPrime(a) where a is 2*n^2+9];

Crossrefs

Sequence in context: A290530 A163387 A147253 * A057473 A267291 A073649

Adjacent sequences: A201473 A201474 A201475 * A201477 A201478 A201479

Keyword

nonn,easy

Author

Vincenzo Librandi, Dec 02 2011

Status

approved