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Number of possible sets {{row sums},{column sums}} of an n X n+1 matrix with entries from {0,1,-1} and all row and column sums distinct.
2

%I #5 Mar 30 2012 17:37:18

%S 1,2,3,6,10,22,39,94,174,464,886,2610

%N Number of possible sets {{row sums},{column sums}} of an n X n+1 matrix with entries from {0,1,-1} and all row and column sums distinct.

%Y Cf. A049475, A049526.

%K nonn,hard,nice

%O 1,2

%A _Michael Kleber_