id:A133294 - OEIS Search Results

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a(n)=2a(n-1)+10a(n-2), a(0)=1, a(1)=1 .

+0
3

1, 1, 12, 34, 188, 716, 3312, 13784, 60688, 259216, 1125312, 4842784, 20938688, 90305216, 389997312, 1683046784, 7266066688, 31362601216, 135385869312, 584397750784, 2522654194688, 10889285897216, 47005113741312 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`a(n)=Sum_{k, 0<=k<=n}A098158(n,k)11^(n-k) . G.f.:(1-x)/(1-2x-10x^2) . a(n)=A083101(n-1) for n>0 .` `a(n)=(1/2)[1+sqrt(11)]^n+(1/2)*[1-sqrt(11)]^n, with n>=0 - Paolo P. Lava (ppl(AT)spl.at), Jun 10 2008`
	CROSSREFS	`Sequence in context: A078194 A034510 A083101 this_sequence A082240 A088596 A077293` `Adjacent sequences: A133291 A133292 A133293 this_sequence A133295 A133296 A133297`
	KEYWORD	`nonn`
	AUTHOR	`Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Dec 20 2007`

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Last modified December 4 15:51 EST 2008. Contains 151308 sequences.

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