Expansion of 1/sqrt(1-4*x-4*x^2+16*x^3).

Terms

a(0) =1a(1) =2a(2) =8a(3) =24a(4) =88a(5) =304a(6) =1120a(7) =4096a(8) =15328a(9) =57536a(10) =218112a(11) =830208a(12) =3176704a(13) =12196352a(14) =46982144a(15) =181452800a(16) =702465536a(17) =2724948992a(18) =10589474816a(19) =41217216512a(20) =160657903616a(21) =627019489280