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A199005
Number of inequivalent cocyclic Hadamard matrices of order 4n.
3
1, 1, 1, 5, 3, 16, 6, 100, 35
OFFSET
1,4
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. Alvarez, J. A. Armario, M. D. Frau, and F. Gudlel, 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.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Nov 01 2011
STATUS
approved