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A251679
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Number of (n+2)X(5+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 or 4
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1
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5151, 13031, 54523, 264983, 1374165, 7229485, 38111915, 201286237, 1064712861, 5635265205, 29825486345, 157850862859, 835509700715, 4422802653901, 23412470736607, 123932983436039, 656034364529441, 3472740407108381
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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 89 (see link above)
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EXAMPLE
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Some solutions for n=3
..1..0..2..1..2..2..1....2..2..2..2..2..2..2....2..1..0..0..0..0..0
..2..2..1..2..2..1..2....2..2..1..2..2..2..1....2..1..0..0..1..0..0
..2..1..2..2..1..2..2....1..2..2..2..2..2..2....2..1..0..0..0..0..0
..1..2..2..1..2..2..2....2..2..2..1..2..2..2....2..1..0..0..0..0..0
..2..2..1..2..2..2..2....2..1..2..2..2..1..2....2..1..0..0..1..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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