A199005 Number of inequivalent cocyclic Hadamard matrices of order 4n.
1, 1, 1, 5, 3, 16, 6, 100, 35
Offset: 1
References
- P. O'Cathain and M. Roeder, The Cocyclic Hadamard matrices of order less than 40, Des. Codes Cryptogr. 58 (1) (2011) 73-88.
Links
- V. Álvarez, J. A. Armario, M. D. Frau, and F. Gudiel, The maximal determinant of cocyclic (-1, 1)-matrices over D_{2t}, Linear Algebra and its Applications, 2011, Volume 436, Issue 4, 15 February 2012, Pages 858-873.