Triangular numbers follow the formula: Where ( Tn ) is the ( n )-th triangular number. What do you want to do? 1 - Check which triangular number is in a given position 2 - Check if a number is ...
Triangular number is the amount of points that can fill equilateral triangle. Example: the number 6 is a triangular number because all sides of a triangle has the same amount of points.
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