It's already available in Google Play the app DominoAccess Notebook that allows the synchronization between iNotes Notebook and an Android device.
In release 1.0.3, the app asks IBM Domino for the user mail database path so it's not necessary to know and input it at the configuration step.
More info, requirements and configuration instructions can be found here.
The app is available in English and Spanish. But if someone is in the mood of having it localized for a different language, please ask for it and help us. We'll send you the strings to be translated and we can include them in a future release.