The idea of bordered magic squares is well known in the literature. In this work, bordered magic squares are constructed in such a way that the final magic sum of each bordered magic square is 2021. The work is for the orders 3 to 26. The work include fractional and decimal numbers entries having positive and/or negative signs. In some cases, the sub-magic sums lead us to Pythagorean triples. It happens with the even order magic squares starting from order 10, such as, orders 10, 12, …, 24, 26.
Below is a link for download the work in pdf:
Inder J. Taneja, Fractional and Decimal Type Bordered Magic Squares With Magic Sum 2021
Below are examples of bordered magic squares with sum 2021.
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