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A243168 Nonnegative integers of the form x^2+6xy-3y^2. 2
0, 1, 4, 9, 13, 16, 24, 25, 33, 36, 37, 49, 52, 61, 64, 69, 73, 81, 88, 96, 97, 100, 109, 117, 121, 132, 141, 144, 148, 157, 169, 177, 181, 184, 193, 196, 208, 213, 216, 225, 229, 241, 244, 249, 253, 256, 276, 277, 289, 292, 297, 312, 313, 321, 324, 325, 333, 337, 349, 352, 361, 373, 376, 384, 388, 393, 397, 400, 409, 421, 429, 433, 436, 441, 457, 468, 472 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Discriminant 48.

LINKS

Table of n, a(n) for n=1..77.

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

CROSSREFS

Primes in this sequence = A068228. Cf. A085018, A244291.

Sequence in context: A312882 A312883 A312884 * A312885 A312886 A010397

Adjacent sequences:  A243165 A243166 A243167 * A243169 A243170 A243171

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jun 01 2014

STATUS

approved

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Last modified June 24 03:27 EDT 2021. Contains 345415 sequences. (Running on oeis4.)