Numerators of coefficients of odd powers of x in expansion of f(x) = x cos (x cos (x cos( ... .

A309204

Numerators of coefficients of odd powers of x in expansion of f(x) = x cos (x cos (x cos( ... .

Terms

    a(0) =1a(1) =-1a(2) =13a(3) =-541a(4) =9509a(5) =-7231801a(6) =1695106117a(7) =-567547087381

External references