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

Terms

a(0) =1a(1) =7a(2) =21a(3) =35a(4) =-7a(5) =-273a(6) =-1043a(7) =-2261a(8) =-1743a(9) =8855a(10) =47621a(11) =128499a(12) =180649a(13) =-176897a(14) =-1972131a(15) =-6650245a(16) =-12796063a(17) =-4632537a(18) =71042293a(19) =316596931a(20) =769091673a(21) =860188175a(22) =-1942889011a(23) =-13792873269a(24) =-41571269999a(25) =-69734967113a(26) =12059021541a(27) =536380855955