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.

1, 36, 125, 81, 128

Offset: 1

Author

Ilya Gutkovskiy, Sep 07 2023

Keywords

• nonn
• more

Examples

			For n = 2: 36 = 6^2 and 36 = 2^2 + 2^5 = 3^2 + 3^3.
		

Links

• Eric Weisstein's World of Mathematics, Perfect Power.

Crossrefs

Cf. A001597, A363040.