  We study a cyclic Leibniz rule, which provides a systematic approach to
lattice supersymmetry, using a numerical method with a transfer matrix. The
computation is carried out in N=2 supersymmetric quantum mechanics with the
phi^6-interaction for weak and strong couplings. The computed energy spectra
and supersymmetric Ward-Takahashi identities are compared with those obtained
from another lattice action. We find that a model with the cyclic Leibniz rule
behaves similarly to the continuum theory compared with the other lattice
action.
