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Published online by Cambridge University Press: 14 February 2012
Consider the differential expression

It is shown here that given pn > 0 with pn ∈ C2n(0, ∞) there exist coefficients

such that all solutions of the equation Ry = 0 are in L2(0,∞). The pi for i<n can be explicitly obtained in terms of pn and a parameter function.