id:A067300 - OEIS Search Results

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One third of third column of triangle A067298.

+0
4

3, 12, 100, 1024, 11632, 140864, 1782080, 23273984, 311407360, 4246776832, 58812433408, 824868814848, 11692779565056, 167254617440256, 2411126992093184, 34994856661483520, 510941885186637824 (list; graph; listen)

	OFFSET	`0,1`
	FORMULA	`a(n)=A067298(n+2, 2)/3.` `G.f.: ((1-4x)c(4x)+2)/(1-2xc(4x))^2, with c(x) is g.f. for A000108 (Catalan).`
	CROSSREFS	`Cf. A067299 (second column), 8*A067301 (fourth column).` `Sequence in context: A115245 A145074 A162055 this_sequence A133359 A102687 A141535` `Adjacent sequences: A067297 A067298 A067299 this_sequence A067301 A067302 A067303`
	KEYWORD	`nonn,easy`
	AUTHOR	`Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de), Feb 05 2002`

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Last modified March 20 09:10 EDT 2010. Contains 173642 sequences.

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