[seqfan] Re: A055099

Richard Mathar mathar at strw.leidenuniv.nl
Thu Jul 22 21:20:48 CEST 2010


vl>  Dear Seqfans
vl> Sequence A055099.
vl> Is correct the formula:
vl> a(n)=3*a(n-1)+2*a(n-2)   with a(0)=1, a(1)=4 ? 

Yes, that is indicated by the denominator of the generating function
of the rational type.

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