Problem 291. Triangle Numbers Below N

This is an offshoot of Cody Problem 5: Triangle Numbers.

Triangle numbers are the sums of successive integers. So 6 is a triangle number because

 6 = 1 + 2 + 3

which can be displayed in a triangular shape like so

      *
     * *
    * * *

Return all triangle numbers below N.

Solve

Solution Stats

36.16% Correct | 63.84% Incorrect
Last Solution submitted on Jan 05, 2025

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