k(ahnh + ah_inh *4------h ajn + o0) = a0nh + atnh 1 +---h ah_tn + ah
with n > 2. 1 < k < n, 0 < a, < n — 1 for all i, a0 ^ 0. a/,	0. We
shall refer to such an integer (iQ...ah as an (h -f \)-digit solution for n and
write k(ah.Oh-i, ...,ai.ao)„ = (no. ui.u/,)„. For example, 8712 and
9801 are