|
|
A079240
|
|
Number of associative non-commutative non-anti-associative non-anti-commutative closed binary operations on a set of order n.
|
|
9
|
|
|
|
OFFSET
|
1,3
|
|
COMMENTS
|
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 A079207 and the corresponding element of A079210.
|
|
LINKS
|
Table of n, a(n) for n=1..4.
|
|
CROSSREFS
|
Cf. A079207, A079241, A079230, A079232, A079234, A079236, A079195, A079242, A079244, A063524.
Sequence in context: A009992 A042105 A206046 * A275564 A275089 A235903
Adjacent sequences: A079237 A079238 A079239 * A079241 A079242 A079243
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Christian van den Bosch (cjb(AT)cjb.ie), Jan 03 2003
|
|
STATUS
|
approved
|
|
|
|