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A147148
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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1100-0111-0010 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 1, 235, 445, 4871, 12101, 166515, 463179, 23308741, 79047775, 13213403375, 57895847749, 14383899135941, 78923584929677, 26055907898557893, 175611010189141581
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OFFSET
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1,9
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LINKS
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EXAMPLE
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Maximal 9 X 9 example
.0.0.0.0.0.0.0.0.0
.0.0.0.0.0.0.0.0.0
.1.0.0.0.0.0.0.0.1
.1.1.0.0.0.0.0.1.1
.0.1.1.1.0.1.1.1.0
.1.0.1.0.0.0.1.0.1
.1.1.0.0.0.0.0.1.1
.0.1.1.1.0.1.1.1.0
.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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