How the Sawtooth Function Works: Triangular numbers (more commonly known by the community as the Sigma Function) is the sum of all natural integers to that point. For example, the 8th triangular number is 36. [1+2+3 . . . ] Sawtooth Numbers behave like this, but more forward to the Triangular Numbers. They are found as the result of the sum of ALL TRIANGULAR NUMBERS to that point. For example, the 3rd STN (Sawtooth Number) is 10 [1+3+6 . . . ]