A173552 Numbers n such that 5+38*n^2 is a prime.

0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 13, 16, 17, 19, 21, 22, 23, 24, 26, 29, 31, 32, 33, 34, 36, 37, 38, 39, 48, 49, 53, 54, 56, 58, 59, 61, 62, 63, 64, 66, 71, 77, 78, 79, 82, 83, 84, 86, 88, 93, 96, 99, 104, 106, 108, 114, 116, 118, 119, 122, 123, 129, 134, 136

Offset

1,3

References

Legendre, Adrien-Marie: Zahlentheorie, (Maser H. transl.), Teubner Verlag, Leipzig 1893, No. 253, p. 326f.

Links

Bruno Berselli, Table of n, a(n) for n = 1..1000

Mathematica

Select[Range[0, 150], PrimeQ[5+38#^2]&] (* Harvey P. Dale, Dec 27 2012 *)

Prog

(Magma) [n: n in [0..300] | IsPrime(5+38*n^2)]; // Vincenzo Librandi, Mar 10 2010

Crossrefs

Cf. A173553, A173554 (associated primes), A173555.

Sequence in context: A001959 A263135 A119930 * A188010 A350349 A008320

Adjacent sequences: A173549 A173550 A173551 * A173553 A173554 A173555

Keyword

nonn,easy

Author

Vincenzo Librandi, Feb 21 2010

Extensions

Offset corrected and entries recomputed by Alonso del Arte and N. J. A. Sloane, Jun 18 2010

Status

approved