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A013579 Number of inequivalent Mendelsohn triple systems (MTS(n,1)) of order n and index 1. +0
1
0, 0, 1, 1, 0, 0, 3, 0, 18, 144 (list; graph; listen)
OFFSET

1,7

REFERENCES

C. J. Colbourn and A. Rosa, "Directed and Mendelsohn triple systems", in: Contemporary Design Theory: A Collection of Surveys (Ed. J. H. Dinitz and D. R. Stinson), pp. 97-136, John Wiley & Sons, New York, 1992.

E. Mendelsohn, "Mendelsohn Designs", Chapter IV.28 of The CRC Handbook of Combinatorial Designs (Ed. J. H. Dinitz and C. J. Colbourn), pp. 388-393, CRC Press, Boca Raton, 1996.

CROSSREFS

Sequence in context: A009759 A127187 A057398 this_sequence A102840 A009353 A083289

Adjacent sequences: A013576 A013577 A013578 this_sequence A013580 A013581 A013582

KEYWORD

nonn,hard

AUTHOR

njas

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Last modified August 29 14:50 EDT 2008. Contains 143238 sequences.


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