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A146399
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Number of n X n binary arrays symmetric under horizontal and vertical reflection 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, 1, 1, 1, 1, 17, 17, 53, 53, 413, 413, 6359, 6359, 140181, 140181, 4762523, 4762523, 251128215, 251128215, 21398918375
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