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A365506
a(n) is the smallest perfect power that can be represented as the sum of n distinct perfect powers in exactly n ways, or -1 if no such number exists.
0
1, 36, 125, 81, 128
OFFSET
1,2
LINKS
Eric Weisstein's World of Mathematics, Perfect Power.
EXAMPLE
For n = 2: 36 = 6^2 and 36 = 2^2 + 2^5 = 3^2 + 3^3.
CROSSREFS
Sequence in context: A223506 A238037 A238032 * A250625 A057837 A352316
KEYWORD
nonn,more
AUTHOR
Ilya Gutkovskiy, Sep 07 2023
STATUS
approved