A011986 - OEIS

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A011986

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

0

1, 5, 5, 9, 12

(list; graph; refs; listen; history; text; internal format)

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