The ornamental design for a tablelamp, as shown and described.
FIG. 1 is a front perspective view of a table lamp showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The broken lines are included for the purpose of illustrating environmental structure and form no part of the claimed design. Broken lines adjacent shaded areas of the design represent the bounds of the claimed design and are not themselves, nor the area within the broken lines, a part of the claimed design.