Published July 28, 2023 | Version v1
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Bordered and Pandiagonal Magic Squares Multiples of 20

  • 1. Formarly, Professor of Mathematics, Federal University of Santa Catarina, Florianópolis, SC, Brazil

Description

During past years author worked with block-wisebordered and block-bordered magic squares. This work make connection between block-wise and  bordered magic squares. We started with bordered magic squares of orders 140 and 110. Based on these two big magic squares, the inner order magic squares multiples of 20 are studied.  It is done with 57 different types of magic squares of order 20. Two pandiagonal magic square of order 20 are also considered. These are composed of pandiagonal magic squares of orders 4 and 5.  Similar kind of work for the multiples of orders 4, 6, 8, 10, 12, 14, 16 and 18 is already done by the author (multiples-4multiples-6multiples-8multiples-10multiples-12multiples-14multiple-16, multiple-18 ). The further multiples, such as multiples, for order 22, shall be done in another works. This work brings examples bordered and pandiagonal magic squares up to order 60.  Higher order examples are given in Excel files attached with the work.

Notes

Excel files of whole the work are attached for download.

Files

Block-Bordered-140-120-20.pdf

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