E.g.f. A(x) = Sum_{n>=0} a(n)*x^(2*n+1)/(2*n+1)! is inverse to f(x) = 2*arctan(x) - x.
A185320
E.g.f. A(x) = Sum_{n>=0} a(n)*x^(2*n+1)/(2*n+1)! is inverse to f(x) = 2*arctan(x) - x.
Terms
- a(0) =1a(1) =4a(2) =112a(3) =8608a(4) =1295104a(5) =322018816a(6) =119597651968
External references
- oeis: A185320