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A147035
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Number of n X n binary arrays with all ones connected only in a 0100-0100-1111-0100 pattern in any orientation.
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0
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1, 1, 1, 5, 17, 39, 181, 1975, 28231, 443863, 9105701, 306959063, 15386456557, 1024328375043, 94252026378527
(list;
graph;
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listen;
history;
text;
internal format)
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OFFSET
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1,4
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LINKS
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EXAMPLE
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Maximal 8 X 8 example
.0.0.1.0.0.0.1.0
.1.1.1.1.0.0.1.0
.0.0.1.0.1.1.1.1
.0.0.1.0.0.0.1.0
.0.1.0.0.0.1.0.0
.0.1.0.0.1.1.1.1
.1.1.1.1.0.1.0.0
.0.1.0.0.0.1.0.0
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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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