a(n) is the smallest number which can be represented as the sum of n distinct positive n-th powers in exactly 4 ways, or -1 if no such number exists.

A374269

a(n) is the smallest number which can be represented as the sum of n distinct positive n-th powers in exactly 4 ways, or -1 if no such number exists.

Terms

    a(0) =-1a(1) =1105a(2) =13896a(3) =300834a(4) =1386406515a(5) =2063792939

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