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Number of nX7 0..3 arrays with every 0 next to a 1, every 1 next to a 2 and every 2 next to a 3 horizontally, vertically or antidiagonally, and no adjacent values equal
1

%I #4 Nov 19 2013 10:31:05

%S 48,9004,124436,1767266,26694774,415332300,6564512068,103384156384,

%T 1636124088162,25973583237174,411171410014356,6519608941018384,

%U 103473233282931542,1639791299611784558,26009017324816484476

%N Number of nX7 0..3 arrays with every 0 next to a 1, every 1 next to a 2 and every 2 next to a 3 horizontally, vertically or antidiagonally, and no adjacent values equal

%C Column 7 of A232161

%H R. H. Hardin, <a href="/A232160/b232160.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 19 2013