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

Terms

a(0) =2a(1) =2a(2) =6a(3) =8a(4) =20a(5) =32a(6) =72a(7) =128a(8) =272a(9) =512a(10) =1056a(11) =2048a(12) =4160a(13) =8192a(14) =16512a(15) =32768a(16) =65792a(17) =131072a(18) =262656a(19) =524288a(20) =1049600a(21) =2097152a(22) =4196352a(23) =8388608a(24) =16781312a(25) =33554432a(26) =67117056a(27) =134217728a(28) =268451840a(29) =536870912