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A109721
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Number of different ways of selecting n non-empty cells in a 4 X 4 binary matrix, excluding all rotationally and symmetrically equivalent matrices.
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0
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1, 3, 21, 77, 252, 567, 1051, 1465, 1674, 1465, 1051, 567, 252, 77, 21, 3, 1
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