A033250 - OEIS

A033250

Primes of form x^2+78*y^2.

79, 103, 127, 199, 313, 337, 367, 433, 439, 601, 607, 673, 727, 751, 823, 919, 937, 991, 1039, 1063, 1153, 1231, 1249, 1297, 1303, 1327, 1447, 1543, 1609, 1663, 1759, 1777, 1873, 1951, 1993, 1999, 2089

(list; graph; refs; listen; history; text; internal format)

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

The primes are congruent to {1, 25, 49, 55, 79, 103, 121, 127, 199, 217, 289, 295} (mod 312). - T. D. Noe, Apr 29 2008

MATHEMATICA

QuadPrimes2[1, 0, 78, 10000] (* see A106856 *)

CROSSREFS

Cf. A139643.

Sequence in context: A117840 A296012 A193142 * A139922 A112795 A107162

Adjacent sequences: A033247 A033248 A033249 * A033251 A033252 A033253

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved