id:A052227 - OEIS Search Results

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a(n)=(4n+1)*binomial(3n,n)/(2n+1).

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1, 5, 27, 156, 935, 5733, 35700, 224808, 1427679, 9126975, 58659315, 378658800, 2453288292, 15944020316, 103897691640, 678610095504 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`T(2n,n) for A111125. - Paul Barry (pbarry(AT)wit.ie), Apr 19 2007`
	CROSSREFS	`Cf. A045721.` `Sequence in context: A083326 A083880 A098409 this_sequence A101386 A084076 A081924` `Adjacent sequences: A052224 A052225 A052226 this_sequence A052228 A052229 A052230`
	KEYWORD	`easy,nonn`
	AUTHOR	`Barry E. Williams, Jan 29 2000`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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