![File:Visual proof centered hexagonal numbers sum.svg](http://upload.wikimedia.org/wikipedia/commons/thumb/a/a0/Visual_proof_centered_hexagonal_numbers_sum.svg/512px-Visual_proof_centered_hexagonal_numbers_sum.svg.png)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 12:59, 15 July 2024 | ![]() | 512 × 384 (11 KB) | Cmglee | {{Information |Description=Proof without words of the sum of the first ''n'' hex numbers by arranging ''n''³ balls in a cube and viewing along a body diagonal, by CMG Lee. Colour denotes cube layer and line style denotes hex number. |Source={{own}} |Date= |Author= Cmglee |Permission= |other_versions= }} Category:SVG cubes Category:Centered hexagonal numbers |
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