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A011990 Covering numbers C(n,9,5) (next term is <= 19). 0
1, 6, 7, 12 (list; graph; refs; listen; history; internal format)
OFFSET

9,2

REFERENCES

CRC Handbook of Combinatorial Designs, 1996, p. 263.

LINKS

D. Gordon, La Jolla Repository of Coverings

Index entries for covering numbers

CROSSREFS

Sequence in context: A190612 A166496 A035110 * A105085 A097354 A171153

Adjacent sequences:  A011987 A011988 A011989 * A011991 A011992 A011993

KEYWORD

nonn,hard,bref

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 15 14:57 EST 2012. Contains 205823 sequences.