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A147113
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Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1000-1000-1111-0010 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 5, 23, 49, 83, 217, 723, 2201, 7571, 32315, 154081, 841887, 4456709, 26183699, 165757037
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