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A198176 Number of orthogonal cocycles in Z^2(Z^t_2,Z_2). 0
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: A181013 A003720 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

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Last modified August 21 13:36 EDT 2017. Contains 290890 sequences.