A139894 - OEIS

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A139894

Primes of the form 4x^2+4xy+59y^2.

59, 67, 83, 107, 139, 179, 227, 283, 347, 419, 499, 523, 547, 571, 587, 643, 683, 691, 787, 811, 883, 1019, 1051, 1283, 1427, 1451, 1459, 1483, 1499, 1531, 1571, 1579, 1619, 1747, 1811, 1907, 1979, 2083, 2179, 2203, 2267, 2371, 2411, 2459, 2539

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Discriminant=-928. See A139827 for more information.

LINKS

Vincenzo Librandi and Ray Chandler, Table of n, a(n) for n = 1..10000 [First 1000 terms from Vincenzo Librandi]

N. J. A. Sloane et al., Binary Quadratic Forms and OEIS (Index to related sequences, programs, references)

FORMULA

The primes are congruent to {35, 51, 59, 67, 83, 91, 107, 115, 123, 139, 179, 187, 219, 227} (mod 232).

MATHEMATICA

QuadPrimes2[4, -4, 59, 10000] (* see A106856 *)

PROG

(Magma) [p: p in PrimesUpTo(3000) | p mod 232 in [35, 51, 59, 67, 83, 91, 107, 115, 123, 139, 179, 187, 219, 227]]; // Vincenzo Librandi, Jul 31 2012

CROSSREFS

Sequence in context: A235808 A290170 A033237 * A048988 A087766 A096339

Adjacent sequences: A139891 A139892 A139893 * A139895 A139896 A139897

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 02 2008

STATUS

approved