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A145971
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Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a one by five or five by one block.
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0
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1, 1, 1, 1, 9, 9, 54, 93, 747, 1903, 18738, 80363, 1083847, 6706491, 120203159, 1028058854
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