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A146386
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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 0110-1111 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 2, 1, 4, 1, 6, 3, 16, 10, 59, 29, 271, 100, 1436, 387, 8334, 2276, 60777, 17581, 593102, 155034, 7275019, 1632582, 107601705, 20304423, 1902586023
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