A011988 - OEIS

A011988

Covering numbers C(n,7,5) (next term is <= 34).

1, 6, 9, 20 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`7,2`
	REFERENCES	`CRC Handbook of Combinatorial Designs, 1996, p. 263.`
	LINKS	`Table of n, a(n) for n=7..10.` `D. Gordon, La Jolla Repository of Coverings` `Index entries for covering numbers`
	CROSSREFS	`Sequence in context: A023041 A118277 A103186 * A161782 A154783 A096546` `Adjacent sequences: A011985 A011986 A011987 * A011989 A011990 A011991`
	KEYWORD	`nonn,hard`
	AUTHOR	`N. J. A. Sloane.`
	STATUS	`approved`

Last modified March 29 15:03 EDT 2023. Contains 361599 sequences. (Running on oeis4.)