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

Terms

a(0) =1a(1) =3a(2) =17a(3) =105a(4) =671a(5) =4393a(6) =29249a(7) =197117a(8) =1340579a(9) =9182013a(10) =63247587a(11) =437684991a(12) =3040564703a(13) =21191554941a(14) =148109893057