A365504 a(n) is the least integer that can be expressed as the sum of a prime number and the n-th power of a nonnegative integer in exactly n ways, or -1 if no such integer exists.

2, 3, 67, 1298, 254179

Offset

1,1

Links

Table of n, a(n) for n=1..5.

Example

For n = 3: 67 = 3 + 4^3 = 59 + 2^3 = 67 + 0^3.

Crossrefs

Cf. A365288, A365289, A365291, A365505.

Sequence in context: A108023 A365289 A352163 * A041249 A356795 A360817

Adjacent sequences: A365501 A365502 A365503 * A365505 A365506 A365507

Keyword

nonn,more

Author

Ilya Gutkovskiy, Sep 07 2023

Status

approved