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A265883
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Number of 3Xn arrays containing n copies of 0..3-1 with no element plus any horizontal neighbor equal to 3-1.
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1
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6, 24, 152, 894, 5748, 38296, 263484, 1849602, 13192840, 95268876, 694784964, 5108061670, 37808693148, 281458023972, 2105591552060, 15819570917916, 119302287092028, 902712209530524, 6850780687656012, 52130155754678238
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=4
..0..1..2..1....2..1..0..1....0..0..1..0....2..2..1..0....0..0..0..1
..2..1..2..2....1..0..0..0....1..2..2..2....1..0..0..0....1..2..1..0
..0..0..1..0....1..2..2..2....2..1..0..1....1..2..2..1....2..2..1..2
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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