%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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