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A206704
Number of Hadamard matrices of order 4n that are equivalent to their transpose.
1
1, 1, 1, 3, 3, 12, 101, 3993
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OFFSET
1,4
COMMENTS
Number of equivalence classes under row/column permutation and negation that contain the transpose.
LINKS
Table of n, a(n) for n=1..8.
Index entries for sequences related to Hadamard matrices
FORMULA
a(n) = 2*A096201(n) - A007299(n).
CROSSREFS
Cf. A007299, A036297, A096201, A206705.
Sequence in context: A014432 A107330 A076509 * A020550 A368960 A306529
Adjacent sequences: A206701 A206702 A206703 * A206705 A206706 A206707
KEYWORD
nonn,more
AUTHOR
Brendan McKay, Feb 11 2012
STATUS
approved

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Last modified October 25 09:27 EDT 2024. Contains 377071 sequences.
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