A182083 Number of cocyclic Hadamard matrices over Z_(2*n+1) X Z^2_2.

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

Table of n, a(n) for n=0..4.

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

Adjacent sequences: A182080 A182081 A182082 * A182084 A182085 A182086

Keyword

nonn,hard,more

Author

L. Edson Jeffery, Apr 10 2012

Status

approved