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A079243 Number of isomorphism classes of associative non-commutative non-anti-associative anti-commutative closed binary operations on a set of order n. 9
0, 2, 2, 3 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

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 A079208.

LINKS

Table of n, a(n) for n=1..4.

Index entries for sequences related to semigroups

CROSSREFS

Cf. A079208, A079242, A079231, A079233, A079235, A079237, A079196, A079241, A079245, A063524.

Sequence in context: A057330 A207820 A186069 * A073438 A187096 A160115

Adjacent sequences:  A079240 A079241 A079242 * A079244 A079245 A079246

KEYWORD

nonn,more

AUTHOR

Christian van den Bosch (cjb(AT)cjb.ie), Jan 03 2003

STATUS

approved

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Last modified April 24 04:20 EDT 2014. Contains 240947 sequences.