Numerators of coefficients in function a(x) such that a(a(x)) = sin(x).

A048602

Numerators of coefficients in function a(x) such that a(a(x)) = sin(x).

Terms

    a(0) =1a(1) =-1a(2) =-1a(3) =-53a(4) =-23a(5) =-92713a(6) =-742031a(7) =594673187a(8) =329366540401

External references