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A146813
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Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1000-1010-1111 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 3, 17, 37, 69, 167, 487, 1595, 5107, 22241, 105661, 549863, 3071095, 17729121, 112871021, 819713685
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