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A146927
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Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 1001-1111-1001 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 3, 7, 10, 30, 37, 151, 202, 698, 975, 4066, 6719, 38176, 61756, 522856, 808712, 8751773, 13746429, 162280787, 268587501, 3757757825, 6472225006, 115990561431, 202655793135
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OFFSET
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1,8
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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
.0.0.0.0.0.0.0.0
.1.1.1.0.0.1.1.1
.0.1.0.0.0.0.1.0
.0.1.0.0.0.0.1.0
.1.1.1.0.0.1.1.1
.0.0.0.0.0.0.0.0
.0.0.0.0.0.0.0.0
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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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