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A206707 Order of largest automorphism group of a Hadamard matrix of order 4n. 0
192, 21504, 190080, 10321920, 6840, 760320, 58968, 20478689280 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Automorphisms are row/column permutations and negations that return the original matrix. The smallest possible order is 2.
LINKS
Table of n, a(n) for n=1..8.
Index entries for sequences related to Hadamard matrices
CROSSREFS
Sequence in context: A338532 A035833 A048616 * A199007 A199006 A001290
Adjacent sequences: A206704 A206705 A206706 * A206708 A206709 A206710
KEYWORD
nonn,more
AUTHOR
Brendan McKay, Feb 11 2012
STATUS
approved

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Last modified June 5 20:14 EDT 2024. Contains 373110 sequences. (Running on oeis4.)