id:A067325 - OEIS Search Results

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Fourth column of triangle A067323.

+0
2

5, 19, 66, 227, 785, 2739, 9646, 34268, 122706, 442510, 1605956, 5861481, 21502585, 79243395, 293246550, 1089264360, 4059928950, 15179606010, 56917649820, 213982542150, 806429435994, 3046017513198 (list; graph; listen)

	OFFSET	`0,1`
	COMMENT	`Also fourth diagonal of triangle A028364.`
	FORMULA	`a(n)= A067323(n+3, 3)= C(n+4)-(C(n+3)+C(n+2)+2C(n+1)), C(n) := A000108(n) (Catalan).` `G.f.: (c(x)^3)(2+2*c(x)+c(x)^2), with c(x) g.f. of A000108 (Catalan).`
	CROSSREFS	`Cf. A067324 (third column).` `Adjacent sequences: A067322 A067323 A067324 this_sequence A067326 A067327 A067328` `Sequence in context: A059509 A137745 A005021 this_sequence A121525 A035344 A114277`
	KEYWORD	`nonn,easy`
	AUTHOR	`Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de), Feb 05 2002`

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.

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