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A284329
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Number of n X 3 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.
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1
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3, 13, 49, 415, 2243, 19385, 122495, 1021999, 7013557, 56860451, 409700413, 3264497171, 24241023451, 191315053703, 1447951944431, 11372354830403, 87138438742684, 682980793270605, 5276292595391119, 41334416149705333
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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=4
..0..1..1. .0..0..0. .0..1..0. .0..0..1. .0..1..1. .0..1..1. .0..0..1
..1..0..0. .0..0..1. .0..1..1. .0..0..1. .1..1..1. .0..1..1. .0..1..0
..1..1..0. .1..1..0. .1..0..0. .1..0..1. .0..1..0. .0..1..1. .0..0..1
..1..0..0. .1..1..1. .1..0..1. .0..1..0. .1..1..0. .1..1..0. .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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