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
Problem Comments
1 Comment
Solution Comments
Show comments
Loading...
Problem Recent Solvers16
Suggested Problems
-
Get the area codes from a list of phone numbers
1076 Solvers
-
Given an unsigned integer x, find the largest y by rearranging the bits in x
2071 Solvers
-
398 Solvers
-
Create a matrix with difference of each row of input matrix
76 Solvers
-
356 Solvers
More from this Author329
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Good problem!