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

Terms

a(0) =1a(1) =1a(2) =7a(3) =9a(4) =31a(5) =49a(6) =127a(7) =225a(8) =511a(9) =961a(10) =2047a(11) =3969a(12) =8191a(13) =16129a(14) =32767a(15) =65025a(16) =131071a(17) =261121a(18) =524287a(19) =1046529a(20) =2097151a(21) =4190209a(22) =8388607a(23) =16769025a(24) =33554431a(25) =67092481a(26) =134217727a(27) =268402689a(28) =536870911a(29) =1073676289