-(q^(4 + 2*n)*(1 + q^(1 + n))*(1 + q^(2 + n))*(-1 + q^(1 + 2*n))*
   (-1 + q^(3 + 2*n))*(-1 + q^(5 + 2*n))) + q^(9 + 7*n)*(-1 + q^n)*
  (-1 + q^(2 + n))*(1 + q^(2 + n))*(-1 + q^(5 + 2*n))*f[n] - 
 q^(5 + 2*n)*(-1 + q^(1 + n))^2*(1 + q^(1 + n))*(-1 + q^(5 + 2*n))*
  (-1 + q^(1 + n) + q^(1 + 2*n) - q^(2 + 2*n) - q^(3 + 2*n) + q^(4 + 2*n) - 
   q^(2 + 3*n) - q^(5 + 3*n) - 2*q^(5 + 4*n) + q^(6 + 5*n))*f[1 + n] + 
 q*(-1 + q^(2 + n))^2*(1 + q^(2 + n))*(-1 + q^(1 + 2*n))*
  (-1 + 2*q^(2 + n) + q^(2 + 2*n) + q^(5 + 2*n) - q^(4 + 3*n) + q^(5 + 3*n) + 
   q^(6 + 3*n) - q^(7 + 3*n) - q^(7 + 4*n) + q^(9 + 5*n))*f[2 + n] + 
 (-1 + q^(1 + n))*(1 + q^(1 + n))*(-1 + q^(3 + n))*(-1 + q^(1 + 2*n))*f[3 + n]
