The nth triangular number is the sum of the first n positive integers. The sequence of triangular numbers starts 1, 3, 6, 10, 15, and 21. These numbers are involved in Cody Problems 5, 291, 44289, 44334, 44732, 55680, 55695, 55705, 55710, and 55715, for example.
Write a function to return the sum of the non-triangular numbers between the nth and (n+1)st triangular numbers. For example, if n = 3, then the function should return 7+8+9 = 24. Beware the banned functions.
Solution Stats
Solution Comments
Show comments
Loading...
Problem Recent Solvers15
Suggested Problems
-
28091 Solvers
-
423 Solvers
-
What is the distance from point P(x,y) to the line Ax + By + C = 0?
560 Solvers
-
Generate N equally spaced intervals between -L and L
954 Solvers
-
256 Solvers
More from this Author327
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
