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

Terms

a(0) =1a(1) =2a(2) =8a(3) =9a(4) =36a(5) =37a(6) =148a(7) =149a(8) =596a(9) =597a(10) =2388a(11) =2389a(12) =9556a(13) =9557a(14) =38228a(15) =38229a(16) =152916a(17) =152917a(18) =611668a(19) =611669a(20) =2446676a(21) =2446677a(22) =9786708a(23) =9786709a(24) =39146836a(25) =39146837a(26) =156587348a(27) =156587349a(28) =626349396a(29) =626349397