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A251776
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Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum 3 or 6 and every diagonal and antidiagonal sum not 3 or 6
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1
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12302, 132886, 748002, 3849230, 39849294, 247384810, 1341002006, 13904412166, 89606678130, 502599987230, 5191270921942, 34184978268610, 195126150915998, 2011358635641966, 13392105172319778, 77114269192360262, 794082619711670574
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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 85 (see link above)
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EXAMPLE
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Some solutions for n=2
..3..0..3..0..0..3..3....3..0..0..3..3..0..3....0..1..2..0..1..2..3
..1..2..3..1..2..0..1....2..3..1..2..0..1..2....2..1..3..2..1..0..2
..2..1..0..2..1..3..2....1..0..2..1..0..2..1....1..1..1..1..1..1..1
..0..0..3..0..0..3..0....0..3..0..0..3..3..0....3..1..2..0..1..2..3
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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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