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A374227
a(n) is the smallest number which can be represented as the sum of three distinct positive n-th powers in exactly n ways, or -1 if no such number exists.
4
6, 62, 5104, 5978882
OFFSET
1,1
EXAMPLE
a(3) = 5104 = 1^3 + 12^3 + 15^3 = 2^3 + 10^3 + 16^3 = 9^3 + 10^3 + 15^3.
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
Ilya Gutkovskiy, Jul 01 2024
STATUS
approved