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

Terms

a(0) =1a(1) =-3a(2) =-6a(3) =6a(4) =14a(5) =-19a(6) =-37a(7) =56a(8) =96a(9) =-164a(10) =-247a(11) =477a(12) =630a(13) =-1378a(14) =-1590a(15) =3957a(16) =3963a(17) =-11300a(18) =-9728a(19) =32104a(20) =23425a(21) =-90771a(22) =-55006a(23) =255478a(24) =124758a(25) =-715923a(26) =-268757a(27) =1997808a(28) =531552a(29) =-5552220