VOOZH
about
URL: https://oeis.org/A079231
⇱ A079231 - OEIS
login
A079231
Number of isomorphism classes of non-associative non-commutative non-anti-associative non-anti-commutative closed binary operations on a set of order n.
9
0, 0, 2187, 147067071
(
list
;
graph
;
refs
;
listen
;
history
;
text
;
internal format
)
OFFSET
1,3
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
A079202
.
LINKS
Table of n, a(n) for n=1..4.
CROSSREFS
Cf.
A079202
,
A079230
,
A079233
,
A079235
,
A079237
,
A079196
,
A079241
,
A079243
,
A079245
,
A063524
.
Sequence in context:
A017203
A017311
A017431
*
A017563
A357674
A352035
Adjacent sequences:
A079228
A079229
A079230
*
A079232
A079233
A079234
KEYWORD
nonn
AUTHOR
Christian van den Bosch (cjb(AT)cjb.ie), Jan 03 2003
STATUS
approved
