329796121169domain: NAppears in sequencesNumerators of coefficients in function a(x) such that a(a(x)) = arctan(x).at n=8A048605Let F(x) be the function such that F(F(x)) = arctan(x), then F(x) = Sum_{n>=0} a(n)*x^(2n+1)/(2n+1)!.at n=8A095885