id:A133558 - OEIS Search Results

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a(n)=a(n-1)+9*a(n-2) for n>=2, a(0)=1, a(1)=2 .

+0
6

1, 2, 11, 29, 128, 389, 1541, 5042, 18911, 64289, 234488, 813089, 2923481, 10241282, 36552611, 128724149, 457697648, 1616214989, 5735493821, 20281428722, 71900873111, 254433731609, 901541589608, 3191445174089, 11305319480561 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`G.f.: (1+x)/(1-x-9x^2) .` `a(n)=Sum_{k, 0<=k<=n+1}A122950(n+1,k)8^(n+1-k). - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Jan 08 2008`
	CROSSREFS	`Sequence in context: A092275 A086252 A106926 this_sequence A062802 A103830 A023664` `Adjacent sequences: A133555 A133556 A133557 this_sequence A133559 A133560 A133561`
	KEYWORD	`easy,nonn`
	AUTHOR	`Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Jan 03 2008`

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Last modified July 23 10:48 EDT 2008. Contains 142285 sequences.

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