OFFSET
1,7
REFERENCES
C. J. Colbourn and J. H. Dinitz, 2007. The Handbook of Combinatorial Designs, 2nd edition, CRC Press, Boca Raton (FL).
C. J. Colbourn and A. Rosa, 1999. Triple systems, Claredon Press, Oxford.
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
KEYWORD
nonn,more,hard
AUTHOR
EXTENSIONS
a(10) corrected by Martin Kidd, Jul 01 2009, based on the value given by Colbourn and Rosa, 1999 and Colbourn and Dinizt, 2007.
STATUS
approved