A033230 Primes of form x^2+43*y^2.

43, 47, 59, 79, 107, 173, 181, 197, 239, 293, 367, 397, 443, 461, 487, 613, 619, 643, 701, 719, 769, 787, 797, 809, 827, 857, 977, 1013, 1049, 1063, 1091, 1129, 1171, 1217, 1399, 1487, 1543, 1549, 1559, 1597

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• easy

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)

Programs

Mathematica

QuadPrimes2[1, 0, 43, 10000] (* see A106856 *)