A198176 Number of orthogonal cocycles in Z^2(Z^t_2,Z_2).

1, 6, 168, 26880

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