The 4 × 4 magic square from Albrecht Dürer 1514 engraving  – also found in a 1765 letter of Benjamin Franklin – is also associative, with each pair of opposite numbers summing to 17.
The 4x4 magic square created by Albrecht Dürer in his 1514 engraving and later mentioned in a 1765 letter from Benjamin Franklin is also related, as each pair of opposing numbers adds up to 17.