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A140189
Number of groupoids (categories all of whose morphisms are invertible) with n morphisms.
+0
3
1, 1, 2, 3, 7, 9, 16, 22, 42, 57, 90, 124, 204, 275, 413, 562, 866, 1161, 1685, 2264, 3308, 4407
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Maintained by
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Last modified December 16 13:01 EST 2009. Contains 170825 sequences.
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