|
Search: id:A162544
|
|
|
| A162544 |
|
Triangle giving number L(k,n) of isotopy classes of Latin rectangles. |
|
+0
2
|
|
| 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 1, 2, 3, 3, 2, 1, 4, 16, 56, 40, 22, 1, 4, 56, 1398, 6941, 3479, 564, 1, 7, 370, 93561, 4735238, 29163047, 13302311, 1676267, 1, 8, 2877, 8024046
(list; table; graph; listen)
|
|
|
OFFSET
|
1,8
|
|
|
COMMENT
|
Isotopy class means an equivalence class of Latin rectangles under the operations of row permutation, column permutation and symbol permutation.
|
|
REFERENCES
|
B. D. Mckay, Isomorph-free exhaustive generation, Department of Computer Science Australian National University, Canberra, 1998.
|
|
CROSSREFS
|
A001009, A040082
Sequence in context: A006371 A000177 A162545 this_sequence A083647 A056691 A130790
Adjacent sequences: A162541 A162542 A162543 this_sequence A162545 A162546 A162547
|
|
KEYWORD
|
nonn,tabl
|
|
AUTHOR
|
Vladan Radivojevic (vladanradivojevic(AT)yahoo.com), Jul 05 2009
|
|
|
Search completed in 0.003 seconds
|
