A011981 - OEIS

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A011981

Covering numbers C(n,6,3) (next term is <= 21).

1, 4, 4, 7, 10, 11, 15 (list; graph; refs; listen; history; internal format)

	OFFSET	`6,2`
	REFERENCES	`CRC Handbook of Combinatorial Designs, 1996, p. 262.`
	LINKS	`D. Gordon, La Jolla Repository of Coverings` `Index entries for covering numbers`
	CROSSREFS	`Sequence in context: A198991 A185670 A063984 * A109544 A187893 A036605` `Adjacent sequences: A011978 A011979 A011980 * A011982 A011983 A011984`
	KEYWORD	`nonn,hard`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 15 15:20 EST 2012. Contains 205823 sequences.