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A280216
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Number of nX6 0..2 arrays with no element unequal 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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0
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30, 1072, 20593, 320755, 4245153, 51995541, 607401930, 6826834071, 74866926296, 803333083744, 8481136146360, 88284309868714, 908465381543452, 9254692532815689, 93470995500319234
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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=3
..0..0..0..1..1..1. .0..1..1..2..2..2. .0..1..1..1..2..2. .0..1..2..2..2..2
..0..0..1..1..1..2. .0..1..1..2..2..0. .2..1..1..2..2..0. .0..0..2..2..2..1
..0..0..1..0..0..0. .1..1..1..1..0..0. .2..2..2..2..0..0. .0..0..1..1..1..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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