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A183497
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Half the number of nX4 0..2 arrays with no element equal to the sum mod 3 of its horizontal and vertical neighbors
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1
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8, 128, 2088, 33057, 524288, 8388608, 134226432, 2147483648, 34360795152, 549755813888, 8796095152128, 140737488355328, 2251799813685248, 36028801316028672, 576460752842391552, 9223372036854775808
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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 3X4
..2..1..0..2....0..0..2..1....1..2..0..1....0..0..1..1....2..2..1..1
..2..1..2..0....1..0..2..0....0..2..1..2....2..1..2..2....1..1..2..1
..1..0..2..1....2..2..1..2....1..0..1..1....0..2..2..0....0..0..0..0
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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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