A086261 Number of antisymmetric n X n conference matrices.

1, 2, 0, 16, 0, 0, 0, 30720, 0, 0, 0, 1486356480, 0

Offset

1,2

Links

Table of n, a(n) for n=1..13.

Eric Weisstein's World of Mathematics, C-Matrix

Crossrefs

Cf. A086260, A086262.

Sequence in context: A277928 A232423 A074031 * A111978 A146558 A364514

Adjacent sequences: A086258 A086259 A086260 * A086262 A086263 A086264

Keyword

nonn,more

Author

Eric W. Weisstein, Jul 14 2003

Extensions

a(9)-a(13) from Martin Ehrenstein, Oct 07 2021

Status

approved