Expansion of (1 + 4*x)/(1 + 7*x + 16*x^2).

Terms

a(0) =1a(1) =-3a(2) =5a(3) =13a(4) =-171a(5) =989a(6) =-4187a(7) =13485a(8) =-27403a(9) =-23939a(10) =606021a(11) =-3859123a(12) =17317525a(13) =-59476707a(14) =139256549a(15) =-23168531a(16) =-2065925067a(17) =14832171965a(18) =-70770402683a(19) =258078067341a(20) =-674220028459a(21) =590291121757