A106977 Primes of the form 4x^2-3xy+6y^2, with x and y nonnegative.

7, 109, 139, 181, 241, 277, 439, 457, 463, 547, 613, 631, 643, 661, 673, 691, 811, 919, 937, 1051, 1069, 1093, 1231, 1321, 1327, 1543, 1579, 1657, 1741, 1747, 2053, 2083, 2113, 2269, 2311, 2437, 2503, 2539, 2677, 2731, 2887, 2953, 2971, 3049

Offset

1,1

Comments

Discriminant=-87.

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[4, -3, 6, 10000] (* see A106856 *)

Crossrefs

Sequence in context: A033516 A130629 A137648 * A142480 A202515 A096498

Adjacent sequences: A106974 A106975 A106976 * A106978 A106979 A106980

Keyword

nonn,easy

Author

T. D. Noe, May 09 2005

Status

approved