A Combinatorial Object

Magic Square of Order 25

F26A Graph

Description: Magic squares are numerical arrays that have substructures with constant sums. This above design is based on a magic square of order 25, containing the numbers from 0 to 624. Each row, column, and main diagonal sums to the "magic constant" of 7800. The numbers in the magic square are represented by a visual base-5 system: four concentric squares serve as the 1, 5, 25, and 125 places, while shades of grey stand for the numerals 0 to 4.

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