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A279659
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Number of 3Xn 0..2 arrays with no element equal to a strict majority of its horizontal 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, 24, 734, 19986, 498424, 11256083, 239891281, 4888317479, 96326861690, 1848624670794, 34730111197052, 641145448826585, 11663825768257154, 209565710121717098, 3725231374131173587, 65606987929682120630
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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 51 (see link above)
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EXAMPLE
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Some solutions for n=4
..0..1..0..2. .0..0..1..1. .0..1..0..2. .0..0..1..1. .0..1..2..1
..0..0..0..0. .2..1..0..0. .0..0..2..1. .1..0..2..1. .2..2..2..2
..2..0..1..0. .1..2..2..0. .1..2..1..1. .0..1..1..0. .0..0..2..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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