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

Terms

a(0) =1a(1) =3a(2) =7a(3) =19a(4) =53a(5) =155a(6) =459a(7) =1371a(8) =4105a(9) =12307a(10) =36911a(11) =110723a(12) =332157a(13) =996459a(14) =2989363a(15) =8968075a(16) =26904209a(17) =80712611a(18) =242137815a(19) =726413427a(20) =2179240261a(21) =6537720763a(22) =19613162267a(23) =58839486779a(24) =176518460313a(25) =529555380915