A067989 - OEIS

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A067989

Row sums of triangle A067979; also of triangle A067990.

1, 9, 34, 95, 240, 553, 1212, 2547, 5195, 10340, 20184, 38766, 73451, 137565, 255080, 468877, 855288, 1549583, 2790510, 4997895, 8907481, 15804634, 27928464, 49169100, 86268325, 150882993, 263124862 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	FORMULA	`a(n)= (n+2)((3n+1)F(n-1)/2+(2n+1)F(n)), with F(n) := A000045(n) (Fibonacci).` `G.f.: (1+4x-x^2)(1+2x)/(1-x-x^2)^3.`
	CROSSREFS	`Sequence in context: A014816 A147691 A000441 * A005344 A050478 A204426` `Adjacent sequences: A067986 A067987 A067988 * A067990 A067991 A067992`
	KEYWORD	`nonn,easy`
	AUTHOR	`Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de), Feb 15 2002`

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Last modified February 15 21:56 EST 2012. Contains 205860 sequences.