Aside from my prior comment, it seems like you're going to implement a more original version from what you've said. If you return to the Kata editor, you can unpublish the kata.

Thanks for the contribution @morgantheplant. However we already have a number of Fibonacci kata and this challenge doesn't seem to provide anything unique from those.

Maybe you can take a look at those and see if there is a new angle you can take that gives this challenge a little bit more separation from them.