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Number of nX7 0..3 arrays avoiding the pattern z-2 z-1 z in any row, column or nw-to-se diagonal
1

%I #5 Mar 31 2012 12:37:14

%S 14124,199487376,1991325229362,20501676381643219,

%T 208677027839980986946,2129766555218823044199240,

%U 21727183867324671091396681434,221684539089233520949913971903568,2261818950700857231940469275086574640

%N Number of nX7 0..3 arrays avoiding the pattern z-2 z-1 z in any row, column or nw-to-se diagonal

%C Column 7 of A206900

%H R. H. Hardin, <a href="/A206899/b206899.txt">Table of n, a(n) for n = 1..10</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 13 2012