The following article by Ekhad and Zeilberger might be of interest.
http://www.math.rutgers.edu/~zeilberg/mamarim/mamarimhtml/somos.html
The following article by Ekhad and Zeilberger might be of interest.
http://www.math.rutgers.edu/~zeilberg/mamarim/mamarimhtml/somos.html