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Re:Over 150 new families of Newtonian periodic planar three-... by kurlberg on Saturday May 06, 2017 @12:44PM (#14281085)
Not quite a computation, but there is a striking example (due to Xia) where 5 particles interact and "kicks" off one particle to infinity in finite time. Further details can be found in

http://www.ams.org/notices/199505/saari-2.pdf

Re:Over 150 new families of Newtonian periodic planar three-... by aisofteng on Saturday May 06, 2017 @11:17PM (#14283663)
Of course, that is physically impossible.
Re:Over 150 new families of Newtonian periodic planar three-... by DamonHD on Saturday May 06, 2017 @01:08PM (#14281219)
Interesting paper: I could just about follow it and the 'm3' particle accelerator is somewhat terrifying!