Expansion of 1/sqrt(1-4*x-12*x^2+48*x^3).

Terms

a(0) =1a(1) =2a(2) =12a(3) =32a(4) =160a(5) =480a(6) =2208a(7) =7104a(8) =31104a(9) =104960a(10) =444928a(11) =1554432a(12) =6444544a(13) =23112704a(14) =94341120a(15) =345243648a(16) =1393754112a(17) =5181456384a(18) =20755267584a(19) =78122680320a(20) =311231840256