A201487 Primes of the form 5n^2 + 9.

29, 89, 509, 1289, 3389, 3929, 7229, 8009, 9689, 10589, 16829, 24509, 32009, 33629, 38729, 44189, 48029, 60509, 67289, 81929, 84509, 92489, 98009, 100829, 118589, 134489, 158429, 188189, 200009, 216329, 224729, 228989, 242009, 250889

Offset

1,1

Links

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

Mathematica

Select[Table[5n^2+9, {n, 0, 1000}], PrimeQ]

Prog

(Magma) [a: n in [0..600] | IsPrime(a) where a is 5*n^2+9];

Crossrefs

Sequence in context: A142791 A325073 A152294 * A317537 A107940 A039416

Adjacent sequences: A201484 A201485 A201486 * A201488 A201489 A201490

Keyword

nonn,easy

Author

Vincenzo Librandi, Dec 03 2011

Status

approved