

A066137


Covering numbers C(n,9,8).


2




OFFSET

9,2


COMMENTS

C(v,k,t) is the smallest number of ksubsets of an nset such that every tsubset is contained in at least one of the ksubsets.


REFERENCES

CRC Handbook of Combinatorial Designs, 1996, p. 263.
W. H. Mills and R. C. Mullin, Coverings and packings, pp. 371399 of Jeffrey H. Dinitz and D. R. Stinson, editors, Contemporary Design Theory, Wiley, 1992.


LINKS



CROSSREFS



KEYWORD

nonn,hard


AUTHOR



STATUS

approved



