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Number of nX6 0..7 arrays with values 0..7 introduced in row major order and each element equal to at least one horizontal or vertical neighbor
0

%I #4 Mar 31 2012 12:36:34

%S 6,3521,3053286,6046334324,17510670291958

%N Number of nX6 0..7 arrays with values 0..7 introduced in row major order and each element equal to at least one horizontal or vertical neighbor

%C Column 6 of A198661

%e Some solutions with all values 0 to 7 for n=3

%e ..0..0..1..2..3..4....0..0..1..1..2..2....0..0..1..1..2..3....0..1..2..2..3..3

%e ..5..5..1..2..3..4....3..4..5..5..6..3....4..4..5..2..2..3....0..1..4..4..5..6

%e ..5..6..6..7..7..4....3..4..7..7..6..3....6..6..5..5..7..7....7..7..0..0..5..6

%K nonn

%O 1,1

%A _R. H. Hardin_ Oct 28 2011