A033229 Primes of form x^2+42*y^2.

43, 67, 163, 193, 211, 331, 337, 379, 457, 499, 547, 571, 673, 739, 883, 907, 1009, 1033, 1051, 1129, 1171, 1201, 1297, 1579, 1723, 1747, 1801, 1873, 2011, 2017, 2083, 2137, 2179, 2251, 2347, 2377, 2473

Offset

1,1

References

David A. Cox, "Primes of the Form x^2 + n y^2", Wiley, 1989.

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)

Formula

Primes congruent to {1, 25, 43, 67, 121, 163} (mod 168). - T. D. Noe, Apr 29 2008

Mathematica

QuadPrimes2[1, 0, 42, 10000] (* see A106856 *)

Crossrefs

Cf. A139643.

Sequence in context: A139499 A201688 A174022 * A139875 A174812 A146355

Adjacent sequences: A033226 A033227 A033228 * A033230 A033231 A033232

Keyword

nonn,easy

Author

N. J. A. Sloane.

Status

approved