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 Solvers14
Suggested Problems
-
630 Solvers
-
What is the distance from point P(x,y) to the line Ax + By + C = 0?
560 Solvers
-
Determine if input is a Narcissistic number
217 Solvers
-
Replace multiples of 5 with NaN
468 Solvers
-
Find my daddy long leg (No 's')
2727 Solvers
More from this Author323
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
