id:A082764 - OEIS Search Results

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Trinomial transform of the Pell numbers (A000129).

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1, 8, 73, 674, 6229, 57572, 532117, 4918166, 45456841, 420141248, 3883214593, 35891157194, 331729069789, 3066052597532, 28338422486797, 261921856685246, 2420849609444881, 22375043097652088, 206804483710406713 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n) = Sum[ Trinomial[n, k] Pell[k], {k, 0, 2n} ] where Trinomial[n, k] = trinomial coefficients (A027907)` `G.f.: (-2x+1)/(7x^2-10x+1).`
	CROSSREFS	`Sequence in context: A096873 A014991 A015577 this_sequence A024104 A137140 A116251` `Adjacent sequences: A082761 A082762 A082763 this_sequence A082765 A082766 A082767`
	KEYWORD	`easy,nonn`
	AUTHOR	`Emanuele Munarini (munarini(AT)mate.polimi.it), May 21 2003`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

AT&T Labs Research