id:A115150 - OEIS Search Results

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Third diagonal (M=3) sequence of triangle A113647, called Y(2,1).

+0
3

1, 15, 113, 783, 5361, 36879, 255985, 1794063, 12689393, 90505231, 650379249, 4705157135, 34244198385, 250572963855, 1842382110705, 13605619630095, 100872203796465, 750556607938575, 5602962592235505, 41952165966643215 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n)= A113647(n+2, n+1), n>=0.` `G.f.: ((4x-2+x^2) + 2(1-4x)c(2x))/((x^2)(1+x)), with the o.g.f. c(x):=(1-sqrt(1-4x))/(2x) of A000108 (Catalan numbers).`
	CROSSREFS	`a(n)=A115138(n+2), n>=0.` `Sequence in context: A105051 A110822 A001849 this_sequence A115138 A092317 A044347` `Adjacent sequences: A115147 A115148 A115149 this_sequence A115151 A115152 A115153`
	KEYWORD	`nonn,easy`
	AUTHOR	`Wolfdieter Lang (wolfdieter.lang_AT_physik_DOT_uni-karlsruhe_DOT_de), Jan 13 2006`

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Last modified December 4 21:35 EST 2008. Contains 151309 sequences.

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