id:A080920 - OEIS Search Results

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a(n)=2a(n-1)+35a(n-2), a(0)=0, a(1)=1.

+0
2

0, 1, 2, 39, 148, 1661, 8502, 75139, 447848, 3525561, 22725802, 168846239, 1133095548, 8175809461, 56009963102, 398173257339, 2756695223248, 19449454453361, 135383241720402, 951497389308439, 6641408238830948 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`a(n)=7^n/12 - (-5)^n/12 a(n) = Sum{k=1..n, binomial(n, 2k-1)*6^(2(k-1))} G.f.: 1/((1+5x)(1-7x))`
	CROSSREFS	`Cf. A079773, A051958, A015441.` `Sequence in context: A062982 A042801 A078733 this_sequence A086338 A042683 A047660` `Adjacent sequences: A080917 A080918 A080919 this_sequence A080921 A080922 A080923`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Feb 24 2003`

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Last modified December 4 23:11 EST 2009. Contains 170347 sequences.

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