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A252499
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Number of (n+2)X(3+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum less than 5
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1
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3610840, 379549048, 43375710311, 4543445214587, 484455746584740, 52117935523803804, 5579085124570270245, 597482912872030817867, 64033765038315732013105, 6860332820791980455007719
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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
..0..1..0..1..1....0..1..0..1..2....0..1..0..1..2....0..1..0..0..1
..0..1..1..1..1....0..0..1..1..2....0..1..0..2..0....0..0..1..1..2
..0..0..0..0..2....0..2..1..1..0....0..0..0..0..2....0..0..1..2..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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