id:A133469 - OEIS Search Results

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a(n)=a(n-1)+7*a(n-2) for n>=2, a(0)=1, a(1)=2 .

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1, 2, 9, 23, 86, 247, 849, 2578, 8521, 26567, 86214, 272183, 875681, 2780962, 8910729, 28377463, 90752566, 289394807, 924662769, 2950426418, 9423065801, 30076050727, 96037511334, 306569866423, 978832445761, 3124821510722 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`G.f.: (1+x)/(1-x-7x^2) .` `a(n)=Sum_{k, 0<=k<=n+1}A122950(n+1,k)6^(n+1-k). - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Jan 08 2008`
	CROSSREFS	`Sequence in context: A009304 A115185 A091107 this_sequence A075714 A101583 A006002` `Adjacent sequences: A133466 A133467 A133468 this_sequence A133470 A133471 A133472`
	KEYWORD	`easy,nonn`
	AUTHOR	`Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Jan 03 2008`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

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