|   | 1 |  initial version  | 
Try:
sage: notebook(require_login=False)
at a Sage prompt, or:
$ sage --notebook require_login=False
from a terminal. This is behavior documented in the docstring:
sage: notebook?
See the third item under the "EXAMPLES" section.
 Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.
 
                
                Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.