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

Terms

a(0) =1a(1) =2a(2) =8a(3) =24a(4) =86a(5) =300a(6) =1096a(7) =4032a(8) =15062a(9) =56684a(10) =214880a(11) =818800a(12) =3133916a(13) =12038200a(14) =46384432a(15) =179193920a(16) =693849254a(17) =2691994060a(18) =10462833808a(19) =40729251920a(20) =158772196436a(21) =619716378280