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A204412
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Number of (n+2)X5 0..2 arrays with every 3X3 subblock having three strictly increasing elements in a row horizontally or vertically, exactly one way
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1
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423416, 781884, 947990, 5776350, 49914501, 422397021, 3619976949, 29207652750, 244861394112, 2092217128425, 16878946536999, 141511903099893, 1209045836543067, 9754550819148096, 81783949750600599, 698680981390316121
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OFFSET
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1,1
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COMMENTS
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Column 3 of A204417
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..210
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FORMULA
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Empirical: a(n) = 577*a(n-3) +63*a(n-5) -63*a(n-8) for n>16
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EXAMPLE
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Some solutions for n=3
..1..1..1..2..0....1..0..2..0..2....0..1..1..1..0....2..2..2..2..0
..1..0..1..2..1....0..1..1..1..0....1..0..1..2..1....0..0..1..2..1
..0..1..2..1..2....0..1..2..2..1....0..1..2..1..2....0..1..2..2..2
..1..1..0..1..2....0..0..1..2..2....0..0..0..1..2....0..0..0..1..2
..0..0..1..2..0....0..1..0..1..2....0..0..1..2..2....0..0..1..2..1
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CROSSREFS
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Sequence in context: A130022 A003828 A175610 * A192228 A206082 A209794
Adjacent sequences: A204409 A204410 A204411 * A204413 A204414 A204415
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin Jan 15 2012
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STATUS
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approved
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