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A284451
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Number of n X 4 0..1 arrays with the number of 1's king-move adjacent to some 0 one less than the number of 0's adjacent to some 1.
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1
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2, 0, 250, 3384, 54248, 824052, 12957944, 203401448, 3209101642, 50702668880, 801990075576, 12692871462160, 200953195066764, 3182000912440584, 50388819126999402, 797940889459632096, 12635596604122356028
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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
..1..1..0..0. .0..0..1..1. .1..0..1..0. .0..1..1..1. .1..0..0..1
..0..0..0..0. .0..0..1..0. .0..1..0..1. .0..1..1..0. .1..0..0..0
..1..1..0..1. .0..1..0..1. .1..0..0..0. .0..0..0..1. .1..1..0..0
..0..0..1..1. .1..0..0..1. .1..1..0..0. .0..0..1..0. .1..1..1..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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