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Search: id:A079242
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| A079242 |
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Number of associative non-commutative non-anti-associative 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 A079208 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. A079208, A079243, A079230, A079232, A079234, A079236, A079195, A079240, A079244, A063524.
Sequence in context: A062448 A139523 A158311 this_sequence A137384 A051148 A102645
Adjacent sequences: A079239 A079240 A079241 this_sequence A079243 A079244 A079245
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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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