Google maintains an archive of "Factory Images." These are large .zip or .tgz files used to restore a device to its original state. You can find them on the Google Play Services for Developers site.
This is the most popular version based on Nougat 7.1.2. Search the LineageOS Download Portal for your specific device model. android 712 download zip file link
If you aren't using a Nexus or Pixel, you won't find an "official" zip from Google. Instead, you’ll need a like LineageOS (based on Android 7.1.2). Google maintains an archive of "Factory Images