Triangular Number Sum


Triangular numbers are the sequence of numbers generated by forming objects inside a triangle.

1, 3, 6, 10, 15, 21…

Find the sum of all 3-digit triangular numbers.

Remember, to solve this puzzle and appear on the leaderboard, email both your solution and your source code (in any language) to lewiscornwall13@gmail.com. Good luck!!

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