I include names, and the best information I have found so far on years of birth and death, and place of birth. (I've obscured the information for all living individuals)
While I can only carry the Newmark surname back six generations, I include the numbers for successive generations as a placeholder for the beginning of each generation. Inversely, I can carry my Cruvant ancestors back a few more generations, but I have promised not to share online the research given to me by a cousin, and I wouldn't know those names without her help.
I would be interested in hearing from anyone who thinks they are a cousin.
For those unfamiliar with the ahnentafel numbering system, the number for X's father is 2X, and X's mother is 2X+1.