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A147036
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Number of n X n binary arrays symmetric under horizontal reflection 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, 1, 1, 1, 1, 1, 57, 101, 643, 1213, 11025, 24069, 404103, 1045647, 63992333, 202749207, 15427634943, 58155611415, 5752715311031, 25613170526609, 4354577724343601, 22986304172716415, 7655445641728562265
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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
.0.1.0.0.0.0.0.1.0
.1.1.1.1.0.1.1.1.1
.0.1.0.0.0.0.0.1.0
.0.1.0.0.0.0.0.1.0
.0.0.0.0.0.0.0.0.0
.0.1.0.0.0.0.0.1.0
.0.1.0.0.0.0.0.1.0
.1.1.1.1.0.1.1.1.1
.0.1.0.0.0.0.0.1.0
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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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