Magic Squares of Orders 21 and 23

Recently, author worked with cornered magic squares of order 6. Later this work is extended up to order 24 (paper1, paper2, paper3). This work is for odd order magics squares. It for the orders 21 to 23. In this work we have covered three types of magic squares. One centered magic squares. These are traditionally previous known magic squares. The second one is double digits bordered magic squares. The third one is cornered magic squares. Some embedded examples are given where one type is embedded in another type. For previou work on odd orders from 3 to 19 refer author's work (paper1, paper2).  Further studies are for orders 25, 27, etc.