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A206961 Number of n X n 0..3 arrays avoiding the pattern z z+1 z in any row, column or nw-to-se diagonal 0

%I

%S 4,256,188699,1657999936,178334417556473,233756297269025517833,

%T 3726713206845504722090161857

%N Number of n X n 0..3 arrays avoiding the pattern z z+1 z in any row, column or nw-to-se diagonal

%C Diagonal of A206967

%e Some solutions for n=4

%e ..1..3..0..1....2..3..1..3....1..3..2..1....1..3..2..1....3..1..1..2

%e ..0..0..1..1....2..2..1..1....1..1..0..3....1..2..2..1....0..1..1..0

%e ..0..1..1..3....3..2..0..1....2..3..3..0....0..2..0..3....0..0..3..0

%e ..3..1..3..1....0..3..3..1....0..2..1..3....0..0..2..1....1..1..2..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 14 2012

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Last modified August 18 14:22 EDT 2022. Contains 356215 sequences. (Running on oeis4.)