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A146404
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Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1000-1111-0010 pattern in any orientation.
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0
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1, 1, 1, 1, 5, 25, 63, 357, 1891, 12499, 113287, 1385821, 19264611, 381162993, 8433132619
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