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A146601
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Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1000-1000-1111 pattern in any orientation.
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0
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1, 1, 1, 1, 9, 17, 69, 301, 1753, 10173, 84391, 728377, 10351543, 132350331, 2998203817
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