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A253980
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Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock diagonal maximum plus antidiagonal maximum nondecreasing horizontally and vertically
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1
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21304, 417518, 8727838, 179261149, 3672381306, 75620185999, 1556452499274, 32027982651882, 659238041669648, 13568633472966170, 279271703727266760, 5748131163323313403, 118311298400157452800, 2435148116665821992581
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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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FORMULA
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Empirical recurrence of order 68 (see link above)
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EXAMPLE
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Some solutions for n=1
..1..1..0..0..0....0..0..1..1..0....0..0..1..1..1....0..0..0..0..1
..1..0..1..1..1....0..1..0..1..1....0..0..1..1..0....0..1..1..1..1
..1..1..1..0..0....1..0..1..1..1....1..0..1..1..1....0..1..1..1..1
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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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