a(n) is the smallest number which can be represented as the sum of n distinct positive n-th powers in exactly 3 ways, or -1 if no such number exists.

A374257

a(n) is the smallest number which can be represented as the sum of n distinct positive n-th powers in exactly 3 ways, or -1 if no such number exists.

Terms

    a(0) =-1a(1) =325a(2) =5104a(3) =16578a(4) =70211956a(5) =201968338

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