A011986 Covering numbers C(n,7,4) (next term is <= 19).

1, 5, 5, 9, 12

Offset

8,2

References

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

Links

Table of n, a(n) for n=8..12.

D. Gordon, La Jolla Repository of Coverings

Index entries for covering numbers

Crossrefs

Sequence in context: A333154 A333141 A290968 * A047880 A058491 A058584

Adjacent sequences: A011983 A011984 A011985 * A011987 A011988 A011989

Keyword

nonn,hard

Author

N. J. A. Sloane.

Status

approved