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A058131
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Number of isomorphism classes of commutative monoids (commutative semigroups with identity) of order n.
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2
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0, 1, 2, 5, 19, 78, 421, 2637, 20486, 246458, 11833361
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OFFSET
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0,3
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LINKS
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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