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A236280
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Number of (n+1)X(3+1) 0..2 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and columnwise
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1
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2304, 87450, 4297035, 134940646, 4211459815, 95929739101, 2162880693927, 38763321249354, 689909923903006, 10265327850180055, 152018370286618223, 1944434455125197226, 24788066196034182283, 279219990393795104480
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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=2
..0..1..1..2....0..0..0..0....0..2..0..1....0..2..1..1....0..2..1..1
..0..1..1..2....0..0..0..1....1..0..2..2....0..0..2..2....0..0..2..2
..1..0..2..1....1..0..2..2....2..2..0..2....2..1..1..0....2..2..2..2
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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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