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

Terms

a(0) =1a(1) =1a(2) =5a(3) =5a(4) =21a(5) =21a(6) =85a(7) =85a(8) =341a(9) =341a(10) =1365a(11) =1365a(12) =5461a(13) =5461a(14) =21845a(15) =21845a(16) =87381a(17) =87381a(18) =349525a(19) =349525a(20) =1398101a(21) =1398101a(22) =5592405a(23) =5592405a(24) =22369621a(25) =22369621a(26) =89478485a(27) =89478485a(28) =357913941a(29) =357913941