A028971 Theta series of quadratic form with Gram matrix [ 3, 1, 1; 1, 3, 1; 1, 1, 3 ].

1, 0, 0, 6, 6, 0, 0, 6, 6, 0, 0, 12, 12, 0, 0, 2, 18, 0, 0, 24, 0, 0, 0, 6, 12, 0, 0, 24, 24, 0, 0, 12, 18, 0, 0, 6, 18, 0, 0, 12, 6, 0, 0, 42, 24, 0, 0, 6, 24, 0, 0, 36, 24, 0, 0, 0, 12, 0, 0, 24, 8, 0, 0, 18, 42, 0, 0, 54, 12, 0, 0, 12, 30, 0, 0, 6, 48, 0, 0, 24, 0, 0, 0, 30, 24, 0

Offset

0,4

Links

Table of n, a(n) for n=0..85.

Crossrefs

Sequence in context: A285338 A020845 A238291 * A173451 A318537 A006806

Adjacent sequences: A028968 A028969 A028970 * A028972 A028973 A028974

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved