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%I #11 Apr 15 2013 06:53:45
%S 192,21504,190080,10321920,6840,760320,58968,20478689280
%N Order of largest automorphism group of a Hadamard matrix of order 4n.
%C Automorphisms are row/column permutations and negations that return the original matrix. The smallest possible order is 2.
%H <a href="/index/Ha#Hadamard">Index entries for sequences related to Hadamard matrices</a>
%K nonn,more
%O 1,1
%A _Brendan McKay_, Feb 11 2012
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