0
1
2
2x mod 1 Map
3
3
x
+1 Mapping
10
12
13
15
15 Puzzle
16-Cell
17
18-Point Problem
24-Cell
42
72 Rule
120-Cell
144
196-Algorithm
239
257-gon
600-Cell
666
2187
65537-gon
© 1996-9
Eric W. Weisstein
1999-05-25
