Expansion of Sum_{k>=0} x^k / (1 - (k*x)^2)^(k+1).

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =13a(5) =40a(6) =177a(7) =965a(8) =4733a(9) =28103a(10) =184065a(11) =1191888a(12) =8713549a(13) =67005689a(14) =528870257a(15) =4526024267a(16) =40051790333a(17) =368513578472