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A079176
Number of nonantiassociative closed binary operations on a set of order n.
9
1, 14, 19631, 4294545736
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OFFSET
1,2
COMMENTS
A079176
(n)+
A079179
(n)=
A002489
(n).
Each a(n) is equal to the sum of the products of each element in row n of
A079178
and the corresponding element of
A079210
.
LINKS
Table of n, a(n) for n=1..4.
C. van den Bosch,
Closed binary operations on small sets
Index entries for sequences related to groupoids
CROSSREFS
Cf.
A079177
,
A079178
,
A079179
.
Sequence in context:
A104376
A053870
A283840
*
A344668
A013754
A073940
Adjacent sequences:
A079173
A079174
A079175
*
A079177
A079178
A079179
KEYWORD
nonn
AUTHOR
Christian van den Bosch (cjb(AT)cjb.ie), Jan 03 2003
STATUS
approved
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Last modified June 17 15:57 EDT 2024. Contains 373463 sequences. (Running on oeis4.)