A106940 - OEIS

A106940

Primes of the form 4x^2+3xy+5y^2, with x and y any integer.

5, 43, 73, 79, 131, 167, 179, 229, 263, 359, 367, 373, 521, 569, 577, 617, 811, 877, 881, 947, 953, 997, 1009, 1021, 1051, 1151, 1163, 1213, 1223, 1231, 1279, 1283, 1307, 1409, 1429, 1439, 1567, 1607, 1697, 1741, 1747, 1783, 1823, 1861, 1889

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

OFFSET

1,1

COMMENTS

Discriminant=-71.

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)

MATHEMATICA

Union[QuadPrimes2[4, 3, 5, 10000], QuadPrimes2[4, -3, 5, 10000]] (* see A106856 *)

CROSSREFS

Sequence in context: A067927 A038546 A022891 * A106941 A139885 A152866

Adjacent sequences: A106937 A106938 A106939 * A106941 A106942 A106943

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 09 2005

STATUS

approved