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A162544
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Triangle giving number L(k,n) of isotopy classes of Latin rectangles.
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1
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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; refs; listen; history; internal format)
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OFFSET
| 1,8
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COMMENTS
| Isotopy class means an equivalence class of Latin rectangles under the operations of row permutation, column permutation and symbol permutation.
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REFERENCES
| B. D. Mckay, Isomorph-free exhaustive generation, Department of Computer Science Australian National University, Canberra, 1998.
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CROSSREFS
| A001009, A040082
Sequence in context: A006371 A000177 A162545 * A083647 A056691 A205011
Adjacent sequences: A162541 A162542 A162543 * A162545 A162546 A162547
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KEYWORD
| nonn,tabl
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AUTHOR
| Vladan Radivojevic (vladanradivojevic(AT)yahoo.com), Jul 05 2009
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