Definition: You are given a list of integers and an integer target, return a list of a pair of numbers in any order such that they add up to target. If there is no such pair of numbers, then return an empty list
Input: [41, 28, 34, 1, 22, 18, 47, 32, 33, 3, 17, 49, 2, 16, 46, 5, 40, 42, 20, 29], target=68

[22, 46]