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A011980
Covering numbers C(n,5,3) (next term is <= 29).
0
1, 4, 5, 8, 12, 17, 20
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OFFSET
5,2
REFERENCES
CRC Handbook of Combinatorial Designs, 1996, p. 262.
LINKS
Table of n, a(n) for n=5..11.
D. Gordon,
La Jolla Repository of Coverings
Index entries for covering numbers
CROSSREFS
Sequence in context:
A188077
A370428
A027975
*
A260163
A362560
A061765
Adjacent sequences:
A011977
A011978
A011979
*
A011981
A011982
A011983
KEYWORD
nonn
,
hard
AUTHOR
N. J. A. Sloane
.
STATUS
approved
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Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)