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A180761
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Half the number of n X n binary arrays with each element equal to at least one neighbor
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0
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0, 3, 63, 4475, 1154119, 1064583557, 3538520414645, 42325704140613463, 1822180205677117048273, 282344956970612464702333909, 157459613671260527898784781898227
(list;
graph;
refs;
listen;
history;
text;
internal format)
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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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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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