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A107011
Primes of the form 5x^2-xy+5y^2, with x and y nonnegative.
1
5, 23, 47, 59, 113, 179, 251, 269, 317, 383, 401, 449, 509, 587, 599, 617, 641, 653, 719, 773, 839, 881, 911, 947, 971, 983, 1061, 1193, 1259, 1277, 1307, 1409, 1433, 1439, 1523, 1571, 1607, 1697, 1709, 1787, 1871, 1973, 2027, 2039, 2069, 2297
OFFSET
1,1
COMMENTS
Discriminant=-99.
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, -1, 5, 10000] (* see A106856 *)
CROSSREFS
Sequence in context: A146467 A053518 A154625 * A031387 A057622 A392104
KEYWORD
nonn,easy
AUTHOR
T. D. Noe, May 09 2005
STATUS
approved