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A229866 Number of n X n 0..2 arrays with corresponding row and column sums equal 0

%I

%S 3,27,1215,384183,923742873,17451302074317,2658656027421822249

%N Number of n X n 0..2 arrays with corresponding row and column sums equal

%C Column 2 of A229870

%e Some solutions for n=4

%e ..0..0..1..2....0..1..2..1....0..0..2..2....0..1..0..0....0..0..1..1

%e ..1..1..1..0....2..2..0..2....2..1..0..0....0..2..0..1....1..2..0..1

%e ..0..2..1..0....2..2..1..0....2..2..0..0....1..0..2..1....1..0..0..2

%e ..2..0..0..2....0..1..2..2....0..0..2..1....0..0..2..1....0..2..2..1

%K nonn

%O 1,1

%A _R. H. Hardin_, Oct 01 2013

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Last modified September 26 19:00 EDT 2021. Contains 347670 sequences. (Running on oeis4.)