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A079241
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Number of isomorphism classes of associative non-commutative non-anti-associative non-anti-commutative closed binary operations on a set of order n.
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9
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OFFSET
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1,3
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COMMENTS
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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 A079207.
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LINKS
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Table of n, a(n) for n=1..4.
Index entries for sequences related to semigroups
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CROSSREFS
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Cf. A079207, A079240, A079231, A079233, A079235, A079237, A079196, A079243, A079245, A063524.
Sequence in context: A101599 A002458 A192600 * A218474 A183538 A184678
Adjacent sequences: A079238 A079239 A079240 * A079242 A079243 A079244
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KEYWORD
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nonn,bref,more
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AUTHOR
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Christian van den Bosch (cjb(AT)cjb.ie), Jan 03 2003
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STATUS
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approved
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