Expansion of x^2*(1 + 2*x + 7*x^2 - 3*x^3 + x^4)/(1 - 26*x^3 - x^6).

Terms

a(0) =0a(1) =1a(2) =2a(3) =7a(4) =23a(5) =53a(6) =182a(7) =599a(8) =1380a(9) =4739a(10) =15597a(11) =35933a(12) =123396a(13) =406121a(14) =935638a(15) =3213035a(16) =10574743a(17) =24362521a(18) =83662306a(19) =275349439a(20) =634361184a(21) =2178432991a(22) =7169660157a(23) =16517753305a(24) =56722920072a(25) =186686513521a(26) =430095947114