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Search: id:A079245
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| A079245 |
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Number of isomorphism classes of associative commutative non-anti-associative non-anti-commutative closed binary operations on a set of order n. |
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+0
9
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OFFSET
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1,2
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COMMENT
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A079231(n)+A079233(n)+A079235(n)+A079237(n)+A079196(n)+A079241(n)+A079243(n)+A079245(n)+A063524(n)=A002489(n)
Each a(n) is equal to the sum of the elements in row n of A079209.
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LINKS
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Index entries for sequences related to semigroups
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CROSSREFS
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Cf. A079209, A079244, A079231, A079233, A079235, A079237, A079196, A079241, A079243, A063524.
Sequence in context: A009248 A012709 A032268 this_sequence A122677 A038177 A163047
Adjacent sequences: A079242 A079243 A079244 this_sequence A079246 A079247 A079248
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KEYWORD
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nonn
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AUTHOR
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Christian van den Bosch (cjb(AT)cjb.ie), Jan 03 2003
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