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A147349
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Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 01010-11111-00100 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 5, 13, 29, 101, 333, 1235, 7837, 52915, 369366, 3142015, 30618033, 342793771, 4834668744, 81286775163, 1567484103319, 35245761964841, 926342368497234, 28497387862877415
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OFFSET
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1,7
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LINKS
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EXAMPLE
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Maximal 8 X 8 example
.0.0.0.0.0.0.0.0
.0.0.0.0.0.1.0.0
.0.0.0.1.1.1.1.1
.0.0.1.0.1.0.1.0
.0.0.1.1.0.0.0.0
.0.1.1.0.0.0.0.0
.0.0.1.1.0.0.0.0
.0.0.1.0.0.0.0.0
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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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