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 Solvers9
Suggested Problems
-
Sort a list of complex numbers based on far they are from the origin.
5798 Solvers
-
2364 Solvers
-
All your base are belong to us
576 Solvers
-
Recurring Cycle Length (Inspired by Project Euler Problem 26)
161 Solvers
-
118 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.