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A089674 a(n) = number of n X n (0,1) matrices A such that the 2n+2 vectors consisting of the rows and the columns of the matrix A, as well as the main diagonal read in the upward direction and the main antidiagonal, are all distinct. 13

%I

%S 0,0,0,1692,2329280

%N a(n) = number of n X n (0,1) matrices A such that the 2n+2 vectors consisting of the rows and the columns of the matrix A, as well as the main diagonal read in the upward direction and the main antidiagonal, are all distinct.

%Y Cf. A088310, A088616, A089673.

%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 1,4

%A _Vladeta Jovovic_, Jan 04 2004

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Last modified May 19 16:42 EDT 2019. Contains 323395 sequences. (Running on oeis4.)