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A146739
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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1110-1111 pattern in any orientation.
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0
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1, 1, 1, 1, 9, 13, 35, 63, 1587, 3733, 130673, 393655, 13792523, 50382037, 6128617283, 28568095487, 6379895824947, 37360214342889, 13793098704317291, 100685778534490077, 83983096306346152831, 769168839966983823023
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OFFSET
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1,5
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LINKS
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EXAMPLE
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Maximal 8 X 8 example
.0.1.1.0.0.1.1.0
.0.1.1.0.0.1.1.0
.0.1.1.0.0.1.1.0
.0.0.1.0.0.1.0.0
.1.0.0.0.0.0.0.1
.1.1.0.0.0.0.1.1
.1.1.0.0.0.0.1.1
.1.1.0.0.0.0.1.1
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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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