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%I #5 Mar 08 2018 18:47:20
%S 0,0,24,6840,6568800
%N a(n) = number of n X n (0,1) matrices A such that the 2n vectors consisting of the rows and the columns of the matrix A are all distinct.
%Y Cf. A088310.
%Y Binary matrices with distinct rows and columns, various versions: A059202, A088309, A088310, A088616, A089673, A089674, A093466, A094000, A094223, A116532, A116539, A181230, A259763
%K nonn,more
%O 1,3
%A Yuval Dekel and Vladeta Jovovic, Nov 17 2003
%E What if you also ask that the two main diagonals are also distinct? - _N. J. A. Sloane_, Jan 03 2004.
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