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

Terms

a(0) =1a(1) =5a(2) =9a(3) =5a(4) =1a(5) =45a(6) =169a(7) =245a(8) =81a(9) =125a(10) =1849a(11) =5445a(12) =6241a(13) =845a(14) =8649a(15) =70805a(16) =167281a(17) =146205a(18) =1369a(19) =465125a(20) =2556801a(21) =4890605a(22) =3052009a(23) =266805a(24) =21613201a(25) =87654845a(26) =135419769a(27) =53235845a(28) =48427681a(29) =909226125