A243177 -id:A243177 - cp's OEIS frontend

A106875 Primes of the form 3x^2+2xy+3y^2, with x and y nonnegative.

3, 19, 59, 107, 163, 211, 251, 347, 419, 499, 571, 587, 619, 659, 883, 907, 947, 1051, 1171, 1259, 1283, 1459, 1483, 1499, 1579, 1627, 1747, 1907, 1931, 1987, 2003, 2083, 2179, 2203, 2347, 2411, 2459, 2467, 2531, 2539, 2707, 2803, 2819, 2963

Offset: 1

T. D. Noe, May 09 2005

Discriminant=-32.

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)

Cf. A243177, A007520.

QuadPrimes2[3, 2, 3, 10000] (* see A106856 *)

A106876 Primes of the form 3x^2-2xy+3y^2, with x and y nonnegative.

Original entry on oeis.org

3, 11, 43, 67, 83, 131, 139, 179, 227, 283, 307, 331, 379, 443, 467, 491, 523, 547, 563, 643, 683, 691, 739, 787, 811, 827, 859, 971, 1019, 1091, 1123, 1163, 1187, 1291, 1307, 1427, 1451, 1523, 1531, 1571, 1619, 1667, 1699, 1723, 1787, 1811

Offset: 1

T. D. Noe, May 09 2005

Discriminant=-32.

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)

Cf. A243177, A007520.

QuadPrimes2[3, -2, 3, 10000] (* see A106856 *)

cp's OEIS Frontend

A106875 Primes of the form 3x^2+2xy+3y^2, with x and y nonnegative.

Views

Author

Keywords

Comments

Links

Crossrefs

Programs

Mathematica