I didn't realize you could use that function with non-digits in your string. Suddenly, this problem is a whole lot easier. :-)
Replace multiples of 5 with NaN
Equal to their cube
Side of an equilateral triangle
Narcissistic number ?
Matlab Basics - Rounding III
It's going down. We're finding simbers!
Golomb's self-describing sequence (based on Euler 341)
Numbered lottery balls into cells
What digit is it?
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