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A279922
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Number of nX3 0..2 arrays with no element equal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.
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1
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0, 15, 474, 14281, 399487, 11023893, 295670293, 7789959515, 202165948916, 5182571589088, 131491345952984, 3306929199461466, 82536757955761100, 2046354441219248128, 50438781290555301198, 1236742541751845876398
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OFFSET
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1,2
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COMMENTS
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LINKS
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FORMULA
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Empirical recurrence of order 54 (see link above)
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EXAMPLE
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Some solutions for n=4
..0..1..2. .0..0..0. .0..0..1. .0..0..1. .0..1..2. .0..1..2. .0..1..0
..2..1..1. .1..0..1. .0..1..1. .2..2..1. .1..0..2. .1..0..0. .1..2..0
..2..2..1. .1..2..2. .2..0..2. .1..1..2. .0..0..1. .2..1..1. .2..2..1
..2..0..0. .0..2..1. .1..1..1. .1..2..2. .1..1..1. .1..1..2. .2..0..1
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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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