is there any negative dudeney number?
Depends upon how you define them.
If you are taking - sign outside the cube of the sum, every negative number corresponding to the positive Dudeney number is a Dudeney number.
If you define by the way OP has defined, -1 qualifies as a Dudeney number.
Great minds think alike.
Most nonzero elements in row
Determine if a Given Number is a Triangle Number
Return area of square
Vector of numbers divisible by 3
04 - Scalar Equations 1
Whole Number Un-Concatenator
Whole Number Concatenator
Airline Ticket Mod7 Checksum
Filter British English into American English
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