id:A152599 - OEIS Search Results

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a(n)=10*a(n-1)-12*a(n-2), n>1 ; a(0)=1, a(1)=4 .

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1, 4, 28, 232, 1984, 17056, 146752, 1262848, 10867456, 93520384, 804794368, 6925699072, 59599458304, 512886194176, 4413668442112, 37982050091008, 326856479604736, 2812780194955264, 24205524194295808, 208301879603494912 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`G.f.: (1-6x)/(1-10x+12x^2). a(n)=Sum_{k, 0<=k<=n}A147703(n,k)3^(n-k).` `a(n)=(1/26)sqrt(13){[5-sqrt(13)]^n-[5+sqrt(13)]^n}+(1/2)*{[5-sqrt(13)]^n+[5+sqrt(13)]^n}, with n>=0 [From Paolo P. Lava (ppl(AT)spl.at), Dec 12 2008]`
	CROSSREFS	`Cf. A006012, A152596` `Sequence in context: A026033 A005810 A121203 this_sequence A089023 A035610 A046904` `Adjacent sequences: A152596 A152597 A152598 this_sequence A152600 A152601 A152602`
	KEYWORD	`nonn`
	AUTHOR	`Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Dec 09 2008`

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Last modified December 5 08:23 EST 2009. Contains 170348 sequences.

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