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A208351 Number of nX6 0..3 arrays with new values 0..3 introduced in row major order and no element equal to any knight-move neighbor (colorings ignoring permutations of colors) 0

%I #4 Mar 31 2012 12:37:22

%S 187,69988,1901508,103672036,8045978096,647640659639,52428246114853

%N Number of nX6 0..3 arrays with new values 0..3 introduced in row major order and no element equal to any knight-move neighbor (colorings ignoring permutations of colors)

%C Column 6 of A208353

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 25 2012

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)