Android Sql Like

I'm using SQLite for my database and what I need is get the list of the username based on a specific string

My query is

SELECT * FROM username_table WHERE username like 'john[^0-9]%' 

Results are:

john1, johnny12, john123, johnatan12 ... (Except john I dont know why)

What i need is only john or john with any number besides him

Expected Result

john, john012, john1245, john1, john46...

Thank you