login
A106951
Primes of the form 3x^2+3xy+7y^2, with x and y nonnegative.
2
3, 7, 13, 37, 43, 67, 73, 97, 127, 193, 223, 277, 283, 337, 367, 373, 397, 433, 457, 463, 487, 523, 547, 577, 607, 613, 643, 727, 733, 787, 823, 853, 877, 883, 907, 937, 967, 997, 1033, 1087, 1123, 1153, 1213, 1297, 1303, 1327, 1423, 1447, 1453, 1483
OFFSET
1,1
COMMENTS
Discriminant=-75.
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[3, 3, 7, 10000] (* see A106856 *)
CROSSREFS
Sequence in context: A078454 A023212 A106952 * A106057 A049492 A166283
KEYWORD
nonn,easy
AUTHOR
T. D. Noe, May 09 2005
STATUS
approved