Triangular numbers are numbers that can be arranged in the shape of an equilateral triangle. Each term in the sequence represents the total number of dots that can form a triangle. Examples include 1, 3, 6, 10, 15, and so ...
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Triangular numbers are numbers that can be arranged in the shape of an equilateral triangle. Each term in the sequence represents the total number of dots that can form a triangle. Examples include 1, 3, 6, 10, 15, and so ...