Expansion of exp(3*x) - exp(x)*(1-BesselI_0(2*x)).

Terms

a(0) =1a(1) =3a(2) =11a(3) =33a(4) =99a(5) =293a(6) =869a(7) =2579a(8) =7667a(9) =22821a(10) =68001a(11) =202799a(12) =605229a(13) =1807263a(14) =5399195a(15) =16136513a(16) =48243347a(17) =144275093a(18) =431573297a(19) =1291258319a(20) =3864163769a(21) =11565703931a(22) =34622195135a(23) =103656406949a(24) =310377872861a(25) =929465445743