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A028960 Numbers represented by quadratic form with Gram matrix [ 3, 1; 1, 8 ]. 1
0, 3, 8, 9, 12, 13, 16, 24, 27, 29, 31, 32, 36, 39, 41, 47, 48, 52, 64, 69, 71, 72, 73, 75, 81, 87, 93, 96, 104, 108, 116, 117, 123, 124, 127, 128, 131, 139, 141, 144, 147, 151, 156, 163, 164, 169, 177, 179, 184, 188, 192, 193, 197, 200 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Nonnegative integers of the form 3*x^2 + 2*x*y + 8*y^2, discriminant -92.

LINKS

Table of n, a(n) for n=1..54.

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

CROSSREFS

Sequence in context: A225555 A047472 A304204 * A139491 A084387 A080761

Adjacent sequences:  A028957 A028958 A028959 * A028961 A028962 A028963

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified September 19 21:11 EDT 2021. Contains 347564 sequences. (Running on oeis4.)