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Search: id:A079244
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| A079244 |
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Number 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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A079230(n)+A079232(n)+A079234(n)+A079236(n)+A079195(n)+A079240(n)+A079242(n)+A079244(n)+A063524(n)=A002489(n)
Each a(n) is equal to the sum of the products of each element in row n of A079209 and the corresponding element of A079210.
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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, A079245, A079230, A079232, A079234, A079236, A079195, A079240, A079242, A063524.
Sequence in context: A121415 A098342 A107995 this_sequence A023815 A034665 A067447
Adjacent sequences: A079241 A079242 A079243 this_sequence A079245 A079246 A079247
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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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