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A028968 Numbers represented by quadratic form with Gram matrix [ 2, 1, 1; 1, 2, 1; 1, 1, 3 ]. 0
0, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 34, 35, 37, 38, 39, 40, 42, 43, 44, 45, 46, 47, 48, 50, 51, 52, 53, 54, 55, 56, 58, 59, 60, 61, 62, 63, 66, 67, 69, 70, 71, 72, 74, 75, 76, 77, 78, 79, 80, 82, 83 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..68.

CROSSREFS

Sequence in context: A028745 A028777 A028962 * A029598 A184004 A183292

Adjacent sequences:  A028965 A028966 A028967 * A028969 A028970 A028971

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified January 23 12:31 EST 2021. Contains 340385 sequences. (Running on oeis4.)