|
Search: id:A058118
|
|
|
| A058118 |
|
Triangle: self-converse semigroups of order n with k idempotents. |
|
+0
5
|
|
| 1, 2, 1, 5, 5, 2, 18, 24, 16, 6, 93, 123, 112, 58, 19, 930, 754, 764, 542, 254, 68, 22899, 6721, 5567, 4751, 2933, 1214, 285
(list; table; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
LINKS
|
Index entries for sequences related to semigroups
|
|
EXAMPLE
|
1; 2,1; 5,5,2; 18,24,16,6; 93,123,112,58,19; ...
|
|
CROSSREFS
|
Row sums give A029851. Main diagonal: A058122. Columns 1-3: A058119-A058121.
Sequence in context: A118244 A108410 A058116 this_sequence A124226 A152290 A032006
Adjacent sequences: A058115 A058116 A058117 this_sequence A058119 A058120 A058121
|
|
KEYWORD
|
nonn,tabl,hard
|
|
AUTHOR
|
Christian G. Bower (bowerc(AT)usa.net), Nov 10 2000
|
|
|
Search completed in 0.002 seconds
|
