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

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