A243170 Nonnegative integers of the form 4x^2+xy-4y^2.

0, 1, 4, 9, 10, 14, 16, 25, 26, 29, 35, 36, 40, 49, 56, 61, 64, 65, 74, 79, 81, 90, 91, 94, 100, 101, 104, 116, 121, 126, 131, 134, 139, 140, 144, 146, 160, 166, 169, 179, 181, 185, 191, 194, 196, 199, 211, 224, 225, 234, 235, 244, 250, 251, 256, 259, 260, 261, 269, 274, 289, 290, 296, 311, 315, 316, 324, 326, 329, 334, 335, 350, 360, 361, 364, 365

Offset

1,3

Comments

Discriminant 65.

Links

Table of n, a(n) for n=1..76.

N. J. A. Sloane et al., Binary Quadratic Forms and OEIS (Index to related sequences, programs, references)

Crossrefs

Primes in this sequence = A141111.

Sequence in context: A140292 A208980 A010426 * A356711 A054294 A198097

Adjacent sequences: A243167 A243168 A243169 * A243171 A243172 A243173

Keyword

nonn

Author

N. J. A. Sloane, Jun 01 2014

Status

approved