A086260 - OEIS

A086260

Number of symmetric n X n conference matrices.

1, 2, 0, 0, 0, 384, 0, 0, 0, 2580480, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	LINKS	`Table of n, a(n) for n=1..13.` `Eric Weisstein's World of Mathematics, C-Matrix`
	CROSSREFS	`Cf. A086261, A086262.` `Sequence in context: A193542 A193545 A336399 * A124505 A326855 A025444` `Adjacent sequences: A086257 A086258 A086259 * A086261 A086262 A086263`
	KEYWORD	`nonn,more`
	AUTHOR	`Eric W. Weisstein, Jul 14 2003`
	EXTENSIONS	`a(9)-a(13) from Martin Ehrenstein, Oct 07 2021`
	STATUS	`approved`

Last modified August 18 08:46 EDT 2022. Contains 356204 sequences. (Running on oeis4.)