Solution: Sum of k-Mirror Numbers

Statement

A k-mirror number is a positive integer without leading zeros that is a palindrome in both base-$10$ and base-k.

Given an integer k representing the base and an integer n, return the sum of the n smallest k-mirror numbers.

Note: A palindrome is a number that reads the same both forward and backward.

Constraints:

• $2 \leq$ k $\leq 9$

• $1 \leq$ n $\leq 30$ ...