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A146263
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Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 110-111-101 pattern in any orientation.
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0
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1, 1, 1, 1, 5, 33, 133, 785, 3005, 17673, 190185, 2271593, 28110409, 628123625, 14202428649, 408602739063, 12463530182045
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