17/16 + 1/(2*x) + (13*x)/8 - (5*x^2)/2 + nl*(-1/24 + x/12 - x^2/12) + 
 (3/4 + 3*x)*HPL[{0}, x] + (-3/4 + (3*x)/2 - (3*x^2)/2)*HPL[{1}, x]
