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A147049
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Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 0100-1100-0111-0010 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 1, 21, 25, 57, 73, 453, 801, 5305, 11153, 83189
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