A162550 - OEIS

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A162550

2n repeated C_n times, where C_n = A000108(n) is a Catalan number.

0, 2, 4, 4, 6, 6, 6, 6, 6, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,2`
	COMMENTS	`Lengths of Dyck paths (A162549).`
	LINKS	`Table of n, a(n) for n=0..76.`
	FORMULA	`a(n) = 2 * A072643(n).`
	CROSSREFS	`Cf. A162549, A072643, A000108.` `Sequence in context: A074325 A058249 A058043 * A191682 A113724 A161794` `Adjacent sequences: A162547 A162548 A162549 * A162551 A162552 A162553`
	KEYWORD	`nonn`
	AUTHOR	`Franklin T. Adams-Watters, Jul 05 2009`
	STATUS	`approved`

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Last modified June 19 13:18 EDT 2013. Contains 226406 sequences.