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A182083
Number of cocyclic Hadamard matrices over Z_(2*n+1) X Z^2_2.
1
6, 24, 120, 840, 3240
OFFSET
0,1
COMMENTS
The precise form of cocyclic Hadamard matrix is given by Eq. (12) on page 131 of [Baliga, et al.].
LINKS
A. Baliga and K. J. Horadam, Cocyclic Hadamard matrices over Z_t X Z^2_2, Australas. J. Combin. 11(1995), 123-134.
CROSSREFS
Cf. A182068.
Sequence in context: A293487 A047865 A355285 * A293049 A293123 A355575
KEYWORD
nonn,hard,more
AUTHOR
L. Edson Jeffery, Apr 10 2012
STATUS
approved