A011986 - OEIS

A011986

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

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`

Last modified March 29 20:41 EDT 2023. Contains 361599 sequences. (Running on oeis4.)