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Number of n X n 0..2 arrays with no row or column sum equal to the previous
1

%I #5 Dec 18 2015 18:17:56

%S 3,52,8460,14394092,231197740500

%N Number of n X n 0..2 arrays with no row or column sum equal to the previous

%C Column 2 of A202651

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Dec 22 2011