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A107004 Primes of the form 5x^2-2xy+5y^2, with x and y nonnegative. 1
5, 53, 101, 173, 269, 317, 389, 653, 701, 797, 821, 941, 1061, 1229, 1277, 1301, 1493, 1613, 1709, 1733, 1949, 1997, 2069, 2141, 2333, 2357, 2381, 2477, 2549, 2693, 2741, 2789, 2837, 2957, 3389, 3413, 3533, 3557, 3701, 3797, 3821, 4229 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Discriminant=-96.

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

QuadPrimes2[5, -2, 5, 10000] (* see A106856 *)

CROSSREFS

Sequence in context: A079385 A091272 A142399 * A139869 A072156 A101190

Adjacent sequences:  A107001 A107002 A107003 * A107005 A107006 A107007

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 09 2005

STATUS

approved

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Last modified December 7 19:05 EST 2016. Contains 278895 sequences.