A067983 - OEIS

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A067983

Convolution of L(n+1) := A000204(n+1) (Lucas), n>=0, with L(n+5), n>=0.

11, 51, 127, 283, 580, 1138, 2163, 4021, 7349, 13255, 23654, 41844, 73483, 128247, 222635, 384707, 662072, 1135334, 1940691, 3307865, 5623681, 9538511, 16144282, 27271848, 45987275, 77419323, 130137943 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	COMMENTS	`Fifth diagonal of triangle A067979. Fifth column of triangle A067990.`
	FORMULA	`a(n)= sum(L(k+1)L(n+5-k), k=0..n) = (18n+11)F(n+1)+11(n+1)F(n), with F(n) := A000045(n) (Fibonacci).` `G.f.: (11+7x)(1+2x)/(1-x-x^2)^2.`
	CROSSREFS	`Sequence in context: A026618 A026684 A181619 * A175360 A185505 A051843` `Adjacent sequences: A067980 A067981 A067982 * A067984 A067985 A067986`
	KEYWORD	`nonn,easy`
	AUTHOR	`Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de), Feb 15 2002`

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Last modified February 17 18:20 EST 2012. Contains 206061 sequences.