Problem 57815. List numbers such that every sum of consecutive positive integers ending in those numbers is composite
The sequence in question in this problem involves numbers m such that all sums of consecutive positive integers ending with m are composite. The number 12 is not in the sequence because 11+12 is prime. The number 13 is not in the sequence because 13 is prime. However, 14 is in the sequence because all of the sums 14, 14+13, 14+13+12, etc. through 14+13+12+…+1 are composite.
Write a function that returns the nth number in this sequence.
Solution Stats
Problem Comments
Solution Comments
Show commentsProblem Recent Solvers5
Suggested Problems
-
Piecewise linear interpolation
534 Solvers
-
285 Solvers
-
Count letters occurence in text, specific to words with a given length.
156 Solvers
-
Converting numbers back from extended form
117 Solvers
-
59 Solvers
More from this Author269
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!