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A145757
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Number of n X n binary arrays with all ones connected only either three adjacent vertically or three adjacent horizontally.
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0
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1, 1, 9, 45, 476, 6933, 199238, 8764691, 657200985, 80295518797, 16444907566268, 5549422397331424, 3112070848837147326
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,3
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LINKS
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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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