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A317820
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Number of nX5 0..1 arrays with every element unequal to 1, 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
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1
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3, 160, 356, 2726, 8556, 47374, 179111, 878802, 3604079, 16657873, 71153802, 320111818, 1390832362, 6188854830, 27092156914, 119925512941, 526911251983, 2326470845881, 10239421120031, 45158496956400, 198899068210330
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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 94 (see link above)
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EXAMPLE
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Some solutions for n=5
..0..0..1..1..0. .0..1..0..1..0. .0..1..0..0..1. .0..1..0..0..1
..1..1..1..1..0. .1..0..0..1..1. .1..0..0..1..0. .0..1..1..1..1
..0..0..0..1..1. .0..0..1..1..0. .1..0..1..1..0. .1..1..0..0..1
..1..0..0..1..1. .1..1..1..0..1. .1..0..1..1..1. .0..0..0..0..1
..1..0..0..0..0. .1..0..0..0..1. .0..0..0..0..0. .1..1..0..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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