A374226 - OEIS

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A374226

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

3

3, 65, 87539319

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..3.

EXAMPLE

a(3) = 87539319 = 167^3 + 436^3 = 228^3 + 423^3 = 255^3 + 414^3.

CROSSREFS

Cf. A011541, A093195, A146756, A374227, A374228.

Sequence in context: A065400 A306410 A091470 * A028567 A003359 A292064

Adjacent sequences: A374223 A374224 A374225 * A374227 A374228 A374229

KEYWORD

nonn,hard,more

AUTHOR

Ilya Gutkovskiy, Jul 01 2024

STATUS

approved