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A266015
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Number of 5Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors equal to itself.
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1
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1, 1, 22, 14, 70, 154, 486, 1602, 5777, 10188, 28506, 101227, 267042, 698241, 2005275, 5355840, 15507088, 43713710, 117062325, 328169426, 927529600, 2543571216, 7113125250, 19776079964, 54664483400, 152873904217, 425365839757
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OFFSET
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1,3
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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..1..0....1..1..2..2....0..1..1..0....0..1..1..0....1..1..2..2
..0..2..2..0....0..2..2..0....0..2..2..0....0..2..2..0....0..2..2..0
..2..2..1..0....0..1..2..2....2..2..1..1....2..2..1..1....0..1..1..0
..0..1..2..2....1..2..2..0....0..2..2..0....0..2..2..1....0..2..2..1
..0..2..2..0....0..1..1..0....2..2..1..1....2..2..1..0....2..2..1..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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