Macbook does not use correct version of Node

I recently installed the latest stable version of node using:

sudo npm cache clean -f
sudo npm install -g n
sudo n stable

nvm use v8.1.0

And when I did nvm list it showed:

       v0.12.13
       v6.9.0
        v7.10.0
->       v8.1.0
         system
default -> stable (-> v8.1.0)
node -> stable (-> v8.1.0) (default)
stable -> 8.1 (-> v8.1.0) (default)
iojs -> N/A (default)
lts/* -> lts/boron (-> N/A)
lts/argon -> v4.8.3 (-> N/A)
lts/boron -> v6.11.0 (-> N/A)

And I manually deleted v6.9.0. Now when I closed my terminal and reopened it, the terminal shows:

N/A: version "6.9.0 -> N/A" is not yet installed.

You need to run "nvm install 6.9.0" to install it before using it.

All I want to use is the latest stable version.

What am I missing here?

via user2825406