My account had 2-step verification enabled and associated with the Authenticator App on my phone.

Yesterday I reformatted it and now I'm installing the apps again. Everything is setup but the Google Authenticator App looks for a barcode, and I cannot find in the 2-step verification steps. What I'd like to do is re-associate my account with the Google Authenticator App without turning off 2 step auth and back on again.

Any ideas?