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

Terms

a(0) =1a(1) =-1a(2) =2a(3) =-4a(4) =9a(5) =-17a(6) =34a(7) =-68a(8) =137a(9) =-273a(10) =546a(11) =-1092a(12) =2185a(13) =-4369a(14) =8738a(15) =-17476a(16) =34953a(17) =-69905a(18) =139810a(19) =-279620a(20) =559241a(21) =-1118481a(22) =2236962a(23) =-4473924a(24) =8947849a(25) =-17895697a(26) =35791394a(27) =-71582788a(28) =143165577a(29) =-286331153