Expansion of e.g.f. BesselI(0,2*sqrt(3)*x) + BesselI(1,2*sqrt(3)*x)/sqrt(3).

Terms

a(0) =1a(1) =1a(2) =6a(3) =9a(4) =54a(5) =90a(6) =540a(7) =945a(8) =5670a(9) =10206a(10) =61236a(11) =112266a(12) =673596a(13) =1250964a(14) =7505784a(15) =14073345a(16) =84440070a(17) =159497910a(18) =956987460a(19) =1818276174a(20) =10909657044a(21) =20827527084a(22) =124965162504a(23) =239516561466