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A203563 Number of nX7 0..2 arrays with row sums equal and column sums equal 0

%I

%S 3,395,35619,7343451,1509893003,360255871643

%N Number of nX7 0..2 arrays with row sums equal and column sums equal

%C Column 7 of A203564

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 03 2012

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Last modified November 27 06:47 EST 2021. Contains 349365 sequences. (Running on oeis4.)