20130311

Appears in sequences

• Numerators of coefficients in function a(x) such that a(a(x)) = arctan(x).at n=6A048605
• Let 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=6A095885