Expansion of (4*x^2+x-1)/(12*x^3+4*x^2+x-1).

Terms

a(0) =1a(1) =0a(2) =0a(3) =12a(4) =12a(5) =60a(6) =252a(7) =636a(8) =2364a(9) =7932a(10) =25020a(11) =85116a(12) =280380a(13) =921084a(14) =3063996a(15) =10112892a(16) =33421884a(17) =110641404a(18) =365683644a(19) =1209311868a(20) =3999743292a(21) =13225194492a(22) =43735910076a(23) =144633607548a(24) =478279581756