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A011988
Covering numbers C(n,7,5) (next term is <= 34).
0
1, 6, 9, 20
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OFFSET
7,2
REFERENCES
CRC Handbook of Combinatorial Designs, 1996, p. 263.
LINKS
Table of n, a(n) for n=7..10.
D. Gordon,
La Jolla Repository of Coverings
Index entries for covering numbers
CROSSREFS
Sequence in context:
A023041
A118277
A103186
*
A161782
A154783
A096546
Adjacent sequences:
A011985
A011986
A011987
*
A011989
A011990
A011991
KEYWORD
nonn
,
hard
AUTHOR
N. J. A. Sloane
.
STATUS
approved
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Last modified April 24 03:08 EDT 2024. Contains 371918 sequences. (Running on oeis4.)