Expansion of (1-x^2-x^3)/(1-2*x-5*x^2-4*x^3-x^4).

Terms

a(0) =1a(1) =2a(2) =8a(3) =29a(4) =107a(5) =393a(6) =1445a(7) =5312a(8) =19528a(9) =71789a(10) =263911a(11) =970191a(12) =3566621a(13) =13111630a(14) =48201040a(15) =177196905a(16) =651412151a(17) =2394724617a(18) =8803498649a(19) =32363465892a(20) =118974735648a(21) =437375519969