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A180769
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Half the number of nX9 binary arrays with each element equal to at least one neighbor
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1
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21, 12377, 3365327, 953982820, 273289411333, 78060898850787, 22310318523546774, 6375989200126477033, 1822180205677117048273, 520757452730725828979262, 148826239836327503673819877
(list;
graph;
refs;
listen;
history;
text;
internal format)
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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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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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