Fapucational : The Number 15 Is A Triangular Number, A Hexagonal Number, The Solution To The Smallest Non Trivial Magic Square, And The Atomic Number Of Phosphorous.
The number 15 is a triangular number, a hexagonal number, the solution to the smallest non trivial magic square, and the atomic number of phosphorous.
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original: https://reddit.com/r/Fapucational/comments/3e06zz/the_number_15_is_a_triangular_number_a_hexagonal/