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Pr Belbie

Pr Belbie

Posts: 368 Silver Posts by user Forum Profile RuneMetrics Profile
36 is both the square of 6 and a triangular number, making it a square triangular number. It is the smallest square triangular number other than 1, and it is also the only triangular number whose square root is also a triangular number.
It is also a 13-gonal number.

07-Dec-2010 18:12:54

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