%I #4 Jul 02 2023 18:07:22

%S 1,6,33,171,849,4083,19161,88203,399777,1789155,7923369,34780155,

%T 151526385,655905747,2823355257,12093944427,51582654273,219172472259,

%U 928100356425,3918172435419,16496161201041,69279692903091

%N 3^n+3n4^(n-1).

%C Binomial transform of A086090

%H <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (11, -40, 48).

%F G.f.: (1-5x+7x^2)/((1-3x)(1-4x)^2)

%Y Cf. A086092.

%K easy,nonn

%O 0,2

%A _Paul Barry_, Jul 09 2003