E.g.f. satisfies: A(x) = x + arctanh(A(x))^2.
A205886
E.g.f. satisfies: A(x) = x + arctanh(A(x))^2.
Terms
- a(0) =1a(1) =2a(2) =12a(3) =136a(4) =2160a(5) =44048a(6) =1098048a(7) =32353536a(8) =1100025600a(9) =42390108672
External references
- oeis: A205886