A126070 Determinant of the 2n-dimensional quadratic form phi_{2n}^{even}.

1, 1, 15, 7, 42, 30, 273, 33, 2310, 1326, 2431, 1311

Offset

1,3

Comments

See article for precise definition and an explicit formula.

Links

Table of n, a(n) for n=1..12.

Skip Garibaldi, A1-invariant quadratic forms, arXiv math.RT/0702731.

Crossrefs

Sequence in context: A168211 A131876 A325136 * A305998 A103241 A194707

Adjacent sequences: A126067 A126068 A126069 * A126071 A126072 A126073

Keyword

nonn

Author

N. J. A. Sloane, Mar 12 2007

Status

approved