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A251777
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Number of (n+2)X(6+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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27242, 430730, 2861058, 16580426, 247384810, 1752287522, 10300749962, 154175434186, 1105860243970, 6575712526154, 98212453983210, 709383209384994, 4239352141271690, 63255463614004042, 458400029991568130
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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=1
..2..0..1..2..0..1..2..3....3..0..0..3..0..3..0..0....0..3..3..0..0..3..0..3
..0..3..3..0..3..3..0..3....2..0..1..2..3..1..2..3....1..0..2..1..3..2..1..0
..1..3..2..1..0..2..1..0....1..3..2..1..0..2..1..3....2..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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