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A086090 2^n+n3^n. 1

%I #7 Jun 06 2017 15:00:13

%S 1,5,22,89,340,1247,4438,15437,52744,177659,591514,1950665,6381388,

%T 20734391,66977950,215266373,688813072,2195513843,6973830946,

%U 22083492161,69736736596,219669514415,690387505702,2165301501629

%N 2^n+n3^n.

%C Binomial transform of A048474

%H <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (8,-21,18).

%F G.f.: (1-3x+3x^2)/((1-2x)(1-3x)^2)

%t Table[2^n+n*3^n,{n,0,30}] (* or *) LinearRecurrence[{8,-21,18},{1,5,22},30] (* _Harvey P. Dale_, Jun 06 2017 *)

%Y Cf. A086091.

%K easy,nonn

%O 0,2

%A _Paul Barry_, Jul 09 2003

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)