A003047 - OEIS

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A003047

a(n) = Catalan(n) * Product a(k), k = 0 . . n-1.
(Formerly M1993)

1, 1, 2, 10, 280, 235200, 173859840000, 98238542885683200000000, 32169371027674057560745102540800000000000000000, 3518552669874927170883258602839130084576857453953842493259776000000000000000000000000000000000 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,3`
	REFERENCES	`D.-Z. Du and F. K. Hwang, Combinatorial Group Testing and Its Applications, World Scientific, 2nd ed., 2000; p. 36.` `J. W. Moon and M. Sobel, Enumerating a class of nested group testing procedures, J. Combin. Theory, B23 (1977), 184-188.` `N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).`
	LINKS	`Table of n, a(n) for n=1..10.`
	CROSSREFS	`See A028580 for another version. Cf. A000108.` `Sequence in context: A144288 A215286 * A028580 A171873 A098706 A143249` `Adjacent sequences: A003044 A003045 A003046 * A003048 A003049 A003050`
	KEYWORD	`easy,nonn`
	AUTHOR	`N. J. A. Sloane.`
	STATUS	`approved`

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Last modified May 25 05:52 EDT 2013. Contains 225644 sequences.