a(n) is the smallest number m such that sigma(m)=22^n, or 0 if m does not exist.

A180460

a(n) is the smallest number m such that sigma(m)=22^n, or 0 if m does not exist.

Terms

    a(0) =1a(1) =0a(2) =0a(3) =10363a(4) =136647a(5) =3018141a(6) =66411009a(7) =1636922343a(8) =31276995183a(9) =688217286267

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