Tₙ = n(n + 1) / 2Variables
- n
- positive integer
Reference details
- Subject
- Number Theory
- Topic
- sums
- Plain text
T_n=n(n+1)/2
Number Theory · sums
Triangular Number Formula
Finds the nth triangular number.
Number Theory · sums
Finds the nth triangular number.
Tₙ = n(n + 1) / 2T_n=n(n+1)/2