Pan

FIG. 1 is a front, left side, perspective view of a pan, showing our new design. FIG. 2 is a rear, right side view perspective view thereof, from underneath the pan; FIG. 3 is a front view thereof, the rear view being a mirror thereof; FIG. 4 is a left side view thereof, the right side view being a mirror thereof; FIG. 5 is a top plan view thereof; and, FIG. 6 is a bottom plan view thereof. The broken lines illustrate portions of the pans that form no part of the claimed design. The surface shading lines show contour and/or distinguish between areas and form no part of the claimed design. The surface shading lines are not surface ornamentation.