The value of the integral for h in equation 36 is wrong. In the denominator on the right side the natural logarithm of two should not be squared. The correct value of the denominator is
6 ln 2 = ln 64. Therefore h = 2,3731382208312509056434459518945..., but from the right side of equation 36 follows h = 3,423714742537303397493525677565... and that is wrong!