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

Terms

a(0) =1a(1) =2a(2) =6a(3) =20a(4) =71a(5) =258a(6) =954a(7) =3572a(8) =13501a(9) =51404a(10) =196858a(11) =757472a(12) =2926097a(13) =11341032a(14) =44080770a(15) =171755976a(16) =670664951a(17) =2623732322a(18) =10281616176a(19) =40350944112a(20) =158573538071a(21) =623930435834