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A106860
Primes of the form 2x^2-xy+2y^2, with x and y nonnegative.
1
2, 3, 17, 47, 53, 113, 167, 197, 227, 233, 263, 317, 383, 443, 557, 563, 587, 593, 677, 683, 773, 827, 863, 887, 947, 977, 1013, 1097, 1103, 1163, 1187, 1193, 1217, 1367, 1373, 1433, 1583, 1607, 1613, 1667, 1697, 1733, 1823, 1847, 1907, 1973, 2063
OFFSET
1,1
COMMENTS
Discriminant=-15.
LINKS
Rick L. Shepherd, Table of n, a(n) for n = 1..10000 [The first 1000 terms were found by Vincenzo Librandi]
N. J. A. Sloane et al., Binary Quadratic Forms and OEIS (Index to related sequences, programs, references)
MATHEMATICA
QuadPrimes2[2, -1, 2, 1000000] (* see A106856 *)
CROSSREFS
Sequence in context: A154316 A383731 A051084 * A042699 A078983 A235617
KEYWORD
nonn,easy
AUTHOR
T. D. Noe, May 09 2005
STATUS
approved