As a heads up, http://oeis.org/A138591 counts 1 as a polite number, but the test suite does not.
Determine if input is a perfect number
Return 'on' or 'off'
Symmetry of vector
Optimum Egyptian Fractions
Arithmetic/geometric sequence, 50/50
Modify subscripts - easier
Find the treasures in MATLAB Central and discover how the community can help you!
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a web site from the following list:
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.
Contact your local office