id:A054459 - OEIS Search Results

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A001333(n), n >= 1, convolved with itself.

+0
5

1, 6, 23, 76, 233, 682, 1935, 5368, 14641, 39406, 104935, 276996, 725849, 1890258, 4896415, 12624752, 32419297, 82951766, 211573047, 538086716, 1364974409, 3454480250, 8724052271, 21989264232, 55326056977, 138975010110 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`a(n)= A054458(n+1,1) (second column of convolution triangle).`
	FORMULA	`a(n)= ((4n+3)LP(n)+(2n+1)LP(n-1))/4, n >= 1, with LP(n)=A001333(n+1), a(0)=1.` `G.f.: ((1+x)/(1-2*x-x^2))^2.`
	CROSSREFS	`Cf. A054458, A001333, A002203.` `Sequence in context: A038737 A038797 A136530 this_sequence A060188 A058751 A034359` `Adjacent sequences: A054456 A054457 A054458 this_sequence A054460 A054461 A054462`
	KEYWORD	`easy,nonn`
	AUTHOR	`Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de), Apr 26 2000`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

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