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A243165 Nonnegative integers of the form 2x^2+4xy-3y^2. 1
0, 2, 3, 5, 8, 12, 13, 18, 20, 27, 30, 32, 37, 43, 45, 48, 50, 52, 53, 62, 67, 72, 75, 78, 80, 82, 83, 93, 98, 107, 108, 117, 120, 123, 125, 128, 130, 142, 147, 148, 155, 157, 158, 162, 163, 172, 173, 178, 180, 192, 195, 197, 200, 205, 208, 212, 213, 222, 227, 237, 242, 243, 245, 248, 258, 267, 268, 270, 277, 283 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Discriminant 40.

LINKS

Table of n, a(n) for n=1..70.

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

CROSSREFS

Primes in this sequence = A141179.

Sequence in context: A287006 A020899 A057987 * A336993 A176746 A067288

Adjacent sequences:  A243162 A243163 A243164 * A243166 A243167 A243168

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, May 31 2014

STATUS

approved

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Last modified September 28 22:03 EDT 2020. Contains 337417 sequences. (Running on oeis4.)