Below are a few Examples of Magic Squares of Orders 20, 22 and 24.

Part 1: Magic Squares of Order 20.

Part 2: Magic Squares of Order 22.

Part 3: Magic Squares of Order 24.

The examples given below can be downloaded at the following link:

Inder J. Taneja, Few Examples of Magic Squares of Even Orders 20 to 30 Using Bordered Magic Rectangles, Zenodo, October 19, 2022, pp. 1-100, https://doi.org/10.5281/zenodo.7225886.

Part 1: Magic Squares of Order 20 With Bordered Magic Rectangles

Part 2: Magic Squares of Order 22 With Bordered Magic Rectangles

Part 3: Magic Squares of Order 24 With Bordered Magic Rectangles