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Numerous but Rare: An Exploration of Magic Squares

Fig 2

The ratio of the appearance probability Pn to two fitted functions.

Pn/exp{(An + B)ln(n) + Cn + D}} (•) and Pn/exp{(En + F)ln(n + G) + H} (×) with A = −4.99 and E = −4.88. Both functions seem to express Pn equally well.

Fig 2