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A146687
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Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 1100-1000-1111 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 3, 7, 7, 19, 19, 43, 43, 167, 167, 933
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