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A251516
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Number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock summing to 2 3 4 5 6 7 8 9 or 10
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1
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246, 227174, 3143505700, 652338909221254, 2029918047045095062378, 94718862023128717130547100164, 66274496846481126674814895095131607258, 695358043344361374897649988715201403961564673534
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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
..3..2....0..1....2..2....1..2....0..2....3..1....2..2....0..0....2..2....3..1
..3..2....2..2....0..1....1..1....3..1....2..2....3..2....0..3....3..0....0..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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