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A252087
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Number of (n+2)X(7+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 3 or 4
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1
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8389, 55703, 457442, 3603209, 28883234, 235656844, 1915241208, 15577211975, 127024329067, 1035087495381, 8431107450808, 68706137836738, 559991811143748, 4563752255803031, 37191534566124117, 303095308858045260
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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
..2..2..2..2..2..2..2..2..2....0..0..0..0..0..2..0..0..2
..2..2..2..2..2..2..2..2..2....2..0..0..0..0..0..0..0..0
..2..2..2..2..2..2..2..1..2....0..0..0..0..2..0..0..0..0
..2..2..1..2..2..2..2..2..2....0..0..0..0..0..0..2..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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