Create the function S(n), defined by the following summation:
The symbol 
is the combination function ('nchoosek(a,b)' in MATLAB). 'S(n)' always yields an integer value, if 'n' is a positive integer. Present the output modulo 1234567.
is the combination function ('nchoosek(a,b)' in MATLAB). 'S(n)' always yields an integer value, if 'n' is a positive integer. Present the output modulo 1234567.NOTE: S(n) may have positive or negative values. Therefore, please use the 'mod' function instead of the 'rem' function to ensure the result would be a positive modulus.
Solution Stats
Problem Comments
4 Comments
Solution Comments
Show comments
Loading...
Problem Recent Solvers11
Suggested Problems
-
Swap the first and last columns
23196 Solvers
-
21802 Solvers
-
I've got the power! (Inspired by Project Euler problem 29)
148 Solvers
-
456 Solvers
-
Self-similarity 3 - Every other pair of terms
59 Solvers
More from this Author116
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Almost got it, but not quite!
Hi William, you are right. The sign should only be negative when n = 2. Thanks.
Tip: This problem is not solved using combinations or factorials.
S(20) = 177547, you're welcome.