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
External references
- oeis: A180460