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A216691 Number of horizontal, vertical, diagonal or knight-move neighbor colorings of an nX2 array with new integer colors introduced in row major order 0

%I #4 Sep 14 2012 06:19:21

%S 1,2,9,90,1451,33694,1047754,41569451,2033056870,119455094071,

%T 8265294573126,662782941109746,60794941081100523,6309797655336714672

%N Number of horizontal, vertical, diagonal or knight-move neighbor colorings of an nX2 array with new integer colors introduced in row major order

%C Column 2 of A216694

%e Some solutions for n=4

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

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

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

%e ..1..5....6..7....4..5....3..2....4..3....1..0....0..1....6..1....5..6....5..1

%K nonn

%O 1,2

%A _R. H. Hardin_ Sep 14 2012

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Last modified May 2 15:37 EDT 2024. Contains 372197 sequences. (Running on oeis4.)