A141401 Numbers n such that 16*n^4 + 625 is prime.

1, 2, 4, 7, 8, 9, 16, 17, 21, 23, 24, 27, 36, 42, 52, 53, 57, 58, 64, 66, 67, 77, 78, 81, 84, 86, 87, 92, 93, 94, 104, 106, 111, 123, 132, 138, 143, 146, 152, 159, 172, 176, 179, 183, 188, 189, 191, 196, 198, 202, 212, 217, 227, 232, 234, 236, 239, 246, 253, 256, 272

Offset

1,2

Links

Robert Israel, Table of n, a(n) for n = 1..10000

Maple

select( n -> isprime(16*n^4+625), [$0..1000]);

Mathematica

Select[Range[300], PrimeQ[16 #^4+625]&] (* Harvey P. Dale, Mar 04 2024 *)

Prog

(Magma) [n: n in [0..500] |IsPrime(16*n^4 + 625 )]; // Vincenzo Librandi, Nov 25 2010
(PARI) is(n)=isprime(16*n^4+625) \\ Charles R Greathouse IV, Jun 13 2017

Crossrefs

Sequence in context: A182636 A116724 A035251 * A132604 A013153 A075663

Adjacent sequences: A141398 A141399 A141400 * A141402 A141403 A141404

Keyword

easy,nonn,changed

Author

James R. Buddenhagen, Aug 03 2008

Extensions

More terms from Vincenzo Librandi, Mar 25 2010

Status

approved