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A096201
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Number of Hadamard matrices of order 4n when a matrix and its transpose are considered equivalent.
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6
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OFFSET
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0,5
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COMMENTS
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More precisely, number of inequivalent Hadamard matrices of order n if two matrices are considered equivalent if one can be obtained from the other by permuting rows, permuting columns, multiplying rows or columns by -1 and possibly transposing.
Computed from the tables on the linked website.
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LINKS
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Table of n, a(n) for n=0..8.
N. J. A. Sloane, Tables of Hadamard matrices
Index entries for sequences related to Hadamard matrices
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CROSSREFS
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Cf. A007299.
Sequence in context: A161000 A220363 A120078 * A025175 A016504 A013335
Adjacent sequences: A096198 A096199 A096200 * A096202 A096203 A096204
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KEYWORD
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nonn,hard,nice
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AUTHOR
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Ian Wanless (Ian.Wanless(AT)cs.anu.edu.au), Jul 28 2004
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EXTENSIONS
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a(8) from Brendan McKay, Feb 11 2012
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STATUS
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approved
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