Suggest a regex that matches a string with letters and (numbers or special characters)

I am developing a sign-up page. In that, I want user to input password with the following format:

• Must contains a series of letters and numbers or special characters
• Order is not necessary
• Reject if the string doesn't have a letter

Example:

Valid inputs:

abc123 
123abc 
abc!@#
!@#abc

Invalid inputs:

abc
123    
!@#    
123!@#

My work:

((([A-Z]|[a-z]|[0-9])*)(([0-9])|([[\]{}\\|;:'"_+=!@#$%$%^&*()-,<\.>/\?`~])))

It matches only abc123 and abc!@#.

Did you try the following ?

((([a-zA-Z]+)([0-9#]+))|(([0-9#]+)([a-zA-Z]+)))[a-zA-Z0-9#]*

# being replaced by allowed special characters.

It mandates an alphabet and a special character or a number followed by any number of allowed characters