e.g. If 4 is given: 1 + 3 + 6 + 10 = 20. Triangular Numbers cannot be negative so return 0 if a negative number is given.

* Calculates the sum of the triangular numbers up to a given level. * @param {number} n - The level up to which triangular numbers are calculated. * @returns {number} - The sum of the triangular ...

Mathematics Magazine presents articles and notes on undergraduate mathematical topics in a lively expository style that appeals to students and faculty throughout the undergraduate years. The journal ...

Abstract: Discrete optimization problems with uncertain input data presented by triangular fuzzy numbers are considered. Objective function is defined as the sum of fuzzy input values. Original fuzzy ...