13-15t sprockets

I'm looking to replace my worn sprockets. They have 3 splines.

It seems the 15t sprocket is no longer available. So I need to replace it with a 16t.

However, I can't find a shop that sells a 16t sprocket with the same tooth profile. It will work if the tooth profile is the same between the 13t and 16t sprockets.

Thank you for your help.