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

Terms

a(0) =0a(1) =1a(2) =1a(3) =2a(4) =5a(5) =12a(6) =31a(7) =83a(8) =227a(9) =634a(10) =1799a(11) =5171a(12) =15027a(13) =44074a(14) =130299a(15) =387880a(16) =1161665a(17) =3497734a(18) =10581819a(19) =32150411a(20) =98057835a(21) =300116888a(22) =921456715a(23) =2837379238a(24) =8760199757a(25) =27112737988a(26) =84103586027a(27) =261435982873a(28) =814257033047