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A243169 Nonnegative integers of the form -x^2+6xy+3y^2. 1
0, 3, 8, 11, 12, 23, 27, 32, 39, 44, 47, 48, 59, 71, 72, 75, 83, 92, 99, 104, 107, 108, 111, 128, 131, 143, 147, 156, 167, 176, 179, 183, 188, 191, 192, 200, 207, 219, 227, 236, 239, 243, 251, 263, 264, 275, 284, 288, 291, 296, 299, 300, 311, 327, 332, 347, 351, 359, 363, 368, 383, 392, 396, 407, 416, 419, 423, 428, 431, 432, 443, 444, 467, 471, 479, 488 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Discriminant 48.

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 = A141187.

Sequence in context: A310279 A310280 A020680 * A051245 A265897 A003157

Adjacent sequences:  A243166 A243167 A243168 * A243170 A243171 A243172

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jun 01 2014

STATUS

approved

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Last modified May 6 16:27 EDT 2021. Contains 343586 sequences. (Running on oeis4.)