

A196651


Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,4,0,2,1 for x=0,1,2,3,4


1



8, 122, 735, 8118, 97292, 965315, 10183698, 109227468, 1156876986, 12249728518, 129927163532, 1377786353021, 14609496269787, 154908775081008, 1642552525655091, 17416757261775288, 184678163033584910
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OFFSET

1,1


COMMENTS

Every 0 is next to 0 3's, every 1 is next to 1 4's, every 2 is next to 2 0's, every 3 is next to 3 2's, every 4 is next to 4 1's


LINKS



EXAMPLE

Some solutions for n=4
..0..2..0..0..0..0....0..2..0..0..0..2....0..0..0..0..0..0....0..0..0..0..2..0
..0..2..0..0..0..0....2..2..0..0..0..0....2..0..0..0..0..0....0..1..0..0..2..2
..0..2..2..0..0..0....0..0..0..0..2..2....2..0..0..0..2..2....1..4..1..0..0..0
..2..0..2..0..0..2....0..0..0..0..2..0....0..2..2..0..2..0....0..1..0..0..0..2


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



