RStabilityConditions

RStabilityConditions[eqn, a[n], n]

RStabilityConditions[{eqn1, eqn2, …}, {a1[n], a2[n], …}, n]

RStabilityConditions[{eqn1, eqn2, …}, {a1[n], a2[n], …}, n, {pnt1, pnt2, …}]