A011982 Covering numbers C(n,7,3) (next term is <= 25).

1, 4, 4, 6, 8, 11, 13, 14, 15

Offset

7,2

References

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

Links

Table of n, a(n) for n=7..15.

D. Gordon, La Jolla Repository of Coverings

Index entries for covering numbers

Crossrefs

Sequence in context: A105790 A338895 A090682 * A282939 A175216 A053639

Adjacent sequences: A011979 A011980 A011981 * A011983 A011984 A011985

Keyword

nonn,hard

Author

N. J. A. Sloane.

Status

approved