A circular wire loop of radius R is placed in the x-y plane centered at the origin O. A square loop of side a(a≪R) having two turns is placed with its center at z=3R along the axis of the circular wire loop, as shown in figure. The plane of the square loop makes an angle of 45∘ with respect to the z-axis. If the mutual inductance between the loops is given by 2p/2Rμ0a2, then the value of p is