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A147390
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Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 10001-11111-00100 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 5, 10, 19, 36, 65, 146, 407, 1091, 3253, 10430, 34729, 123767, 502614, 2115588, 9918395, 49148200, 263504620
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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
.0.0.1.0.0.1.1.0
.1.1.1.1.1.0.1.0
.1.0.0.0.1.0.1.1
.0.1.1.0.0.0.1.0
.0.1.0.0.0.1.1.0
.1.1.0.1.0.0.0.1
.0.1.0.1.1.1.1.1
.0.1.1.0.0.1.0.0
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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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