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A146781
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Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 0010-1010-1111 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 5, 17, 37, 69, 119, 413, 1361, 4953, 21841, 100255, 486625, 2729263, 14571959, 98507721, 677047259
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