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A235440
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Number of (n+1)X(4+1) 0..2 arrays with 2X2 subblock sums lexicographically nondecreasing rowwise and nonincreasing columnwise
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1
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11100, 606279, 37115629, 1957598978, 105025440136, 4689618011086, 213149442840795, 8137410774396649, 316806854119735304, 10529263700505157069, 357031453053915561568, 10500030926110350648033
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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=1
..1..1..1..2..0....2..1..1..0..1....1..2..0..1..0....1..0..1..0..1
..2..2..2..0..1....0..1..1..1..0....0..0..0..0..0....0..2..0..2..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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