These are based on some of the "block-wise" squares described by Inder Taneja.
BlockSquares makes block magic squares.
Inder referred to the border of an order 11 square by Phan Văn Khái and noted that two borders could be used for prime orders such as 13.
Taneja, Inder J.
ijtaneja@gmail.com
Formerly, Professor of Mathematics, Federal University of Santa Catarina,
88040-400 Florianópolis, SC, Brazil.
Inder J. Taneja, Block-Wise Constructions of Magic and Bimagic Squares of Orders 8 to 108, May 15, 2019, pp. 1-43, Zenodo
http://doi.org/10.5281/zenodo.2843326
Inder J. Taneja, Bordered and Block-Wise Bordered Magic Squares: Even Order Multiples
https://inderjtaneja.com/2021/02/12/bordered-and-block-wise-bordered-magic-squares-even-order-multiples/
Inder J. Taneja, Bordered and Block-Wise Bordered Magic Squares: Even Order Multiples, Zenodo, February 10, 2021, pp. 1-96
http://doi.org/10.5281/zenodo.4527746
Inder J. Taneja, Bordered and Block-Wise Bordered Magic Squares: Odd Order Multiples
https://inderjtaneja.com/2021/02/13/bordered-and-block-wise-bordered-magic-squares-odd-order-multiples/
Inder J. Taneja, Bordered and Block-Wise Bordered Magic Squares: Odd Order Multiples. Zenodo. February 10, 2021, pp. 1-75
http://doi.org/10.5281/zenodo.4527739
Phan Văn Khái 133 Le Loi, Quang Ngai City, Vietnam
khaiphanvan65@gmail.com
STUDIES THE ARITHMATIC PROGRESSION RELATION WITH THE MAGIC SQUARES.