Recently Matt Parker uploaded a video to his YouTube channel where he discussed numbers and the words used to represent them in different languages, more precisely the length of these words:

The basic idea is the following:

*one*has 3 letters,*two*has 3 letters,*three*has 5 letters,*four*has 4 letters,*five*has 4 letters,*six*has 3 letters,*seven*has 5 letters,*eight*has 5 letters,*nine*has 4 letters,*ten*has 3 letters,

and so on... This can be seen as a function

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