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A285753
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Number of 4 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally 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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0, 52, 550, 8544, 119506, 1729212, 25450414, 379892924, 5724356600, 86870686676, 1325147534394, 20298649626624, 312012262489322, 4809932665481580, 74334215199171600, 1151283153187656576, 17865166558629037394
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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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EXAMPLE
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Some solutions for n=4
..0..0..1..1. .1..0..0..1. .1..1..0..0. .0..0..0..0. .1..1..0..0
..0..0..1..1. .0..1..1..0. .0..1..0..0. .1..0..0..1. .1..0..1..1
..1..0..0..0. .1..0..0..1. .0..1..0..0. .1..1..0..0. .0..1..0..0
..0..1..0..1. .0..0..0..1. .1..1..0..1. .1..1..1..0. .0..1..0..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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