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A011982 Covering numbers C(n,7,3) (next term is <= 25). +0
1
1, 4, 4, 6, 8, 11, 13, 14, 15 (list; graph; listen)
OFFSET

7,2

REFERENCES

CRC Handbook of Combinatorial Designs, 1996, p. 262.

LINKS

D. Gordon, La Jolla Repository of Coverings

Index entries for covering numbers

CROSSREFS

Sequence in context: A107287 A105790 A090682 this_sequence A053639 A100090 A074161

Adjacent sequences: A011979 A011980 A011981 this_sequence A011983 A011984 A011985

KEYWORD

nonn,hard

AUTHOR

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

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.


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