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A146625
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Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1001-1111 pattern in any orientation.
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0
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1, 1, 1, 1, 9, 17, 43, 177, 951, 5185, 35811, 267203, 2640609, 29564643, 461890027, 7371309815, 158387025739, 3708738153141
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