-(q^(6 + 2*n)*(1 + q^(1 + n))*(1 + q^(2 + n))*(1 + q^(3 + n))*
   (-1 + q^(1 + 2*n))*(-1 + q^(3 + 2*n))*(-1 + q^(5 + 2*n))*
   (-1 + q^(7 + 2*n))) + q^(8 + 4*n)*(-1 + q^n)*(-1 + q^(3 + n))*
  (1 + q^(3 + n))*(-1 + q^(5 + 2*n))*(-1 + q^(7 + 2*n))*f[n] - 
 q^(5 + 2*n)*(-1 + q^(1 + n))^2*(1 + q^(1 + n))*(-1 + q^(3 + n))*
  (1 + q^(3 + n))*(-1 + q^(7 + 2*n))*(1 + q - 2*q^(2 + n) - q^(3 + n) - 
   q^(1 + 2*n) - q^(2 + 2*n) + q^(3 + 2*n) - q^(5 + 2*n) - q^(6 + 2*n) + 
   q^(3 + 3*n) - q^(5 + 3*n) - q^(6 + 3*n) + q^(7 + 3*n) - q^(4 + 4*n) + 
   q^(6 + 4*n) + q^(7 + 4*n) - q^(8 + 4*n) - q^(8 + 5*n) + q^(9 + 6*n))*
  f[1 + n] + q*(-1 + q^(2 + n))^2*(1 + q^(2 + n))*(-1 + q^(1 + 2*n))*
  (-1 + q^(7 + 2*n))*(1 - 2*q^(2 + n) - q^(3 + n) - q^(2 + 2*n) - 
   q^(3 + 2*n) + q^(4 + 2*n) + q^(5 + 2*n) - q^(6 + 2*n) + 2*q^(4 + 3*n) + 
   q^(5 + 3*n) - 2*q^(6 + 3*n) - q^(7 + 3*n) + 2*q^(8 + 3*n) + q^(9 + 3*n) + 
   q^(5 + 4*n) - q^(6 + 4*n) + 3*q^(8 + 4*n) + 3*q^(9 + 4*n) + 
   2*q^(8 + 5*n) + q^(9 + 5*n) - 2*q^(10 + 5*n) - q^(11 + 5*n) + 
   2*q^(12 + 5*n) + q^(13 + 5*n) - q^(10 + 6*n) - q^(11 + 6*n) + 
   q^(12 + 6*n) + q^(13 + 6*n) - q^(14 + 6*n) - 2*q^(14 + 7*n) - 
   q^(15 + 7*n) + q^(16 + 8*n))*f[2 + n] + (1 - q^(1 + n))*(1 + q^(1 + n))*
  (-1 + q^(3 + n))^2*(1 + q^(3 + n))*(-1 + q^(1 + 2*n))*
  (1 - q^(3 + n) - q^(3 + 2*n) + q^(5 + 2*n) + q^(6 + 2*n) - q^(7 + 2*n) + 
   q^(6 + 3*n) - q^(8 + 3*n) - q^(9 + 3*n) + q^(10 + 3*n) - q^(8 + 4*n) - 
   q^(9 + 4*n) + q^(10 + 4*n) - q^(12 + 4*n) - q^(13 + 4*n) - 
   2*q^(13 + 5*n) - q^(14 + 5*n) + q^(15 + 6*n) + q^(16 + 6*n))*f[3 + n] + 
 q^(12 + 4*n)*(-1 + q^(1 + n))*(1 + q^(1 + n))*(-1 + q^(4 + n))*
  (-1 + q^(1 + 2*n))*(-1 + q^(3 + 2*n))*f[4 + n]
