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
-
3083 Solvers
-
1665 Solvers
-
630 Solvers
-
Write a function man that takes a row vector v and returns a matrix H as follows..
647 Solvers
-
Spot the First Occurrence of 5
434 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!
