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Number of nX5 0..6 arrays with values 0..6 introduced in row major order and no element equal to any horizontal or vertical neighbor
2

%I #5 Mar 31 2012 12:36:35

%S 15,10507,34003792,141168480719,601755060211186,2572072097029554676,

%T 10996875674843226590993,47018449018254334323435148,

%U 201033586140960282012089201427,859545914195473034723104861028749

%N Number of nX5 0..6 arrays with values 0..6 introduced in row major order and no element equal to any horizontal or vertical neighbor

%C Column 5 of A198723

%H R. H. Hardin, <a href="/A198720/b198720.txt">Table of n, a(n) for n = 1..52</a>

%e Some solutions with all values 0 to 6 for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Oct 29 2011