A198176 - OEIS

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A198176

Number of orthogonal cocycles in Z^2(Z^t_2,Z_2).

1, 6, 168, 26880 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	REFERENCES	`Horadam, K. J., Hadamard matrices and their applications. Princeton University Press, Princeton, NJ, 2007. xiv+263 pp. See p. 132.`
	LINKS	`Table of n, a(n) for n=1..4.`
	CROSSREFS	`Sequence in context: A003720 A306837 A002884 * A264358 A264796 A266852` `Adjacent sequences: A198173 A198174 A198175 * A198177 A198178 A198179`
	KEYWORD	`nonn,more`
	AUTHOR	`N. J. A. Sloane, Feb 05 2012`
	STATUS	`approved`

Last modified March 19 23:02 EDT 2019. Contains 321343 sequences. (Running on oeis4.)