Expansion of (1+x-3*x^2) / ( 1-2*x-4*x^2+6*x^3 ).

Terms

a(0) =1a(1) =3a(2) =7a(3) =20a(4) =50a(5) =138a(6) =356a(7) =964a(8) =2524a(9) =6768a(10) =17848a(11) =47624a(12) =126032a(13) =335472a(14) =889328a(15) =2364352a(16) =6273184a(17) =16667808a(18) =44242240a(19) =117516608a(20) =311995328a(21) =828603648a(22) =2200088960a(23) =5842620544a(24) =15513975040a(25) =41197898496a(26) =109395973888a(27) =290499691520a(28) =771395887616