demo.sagews

%gap
n := 8;
G := DihedralGroup(n);

8 <pc group of size 8 with 3 generators>

G = gap('G'); G

Group( [ f1, f2, f3 ] )

G.Size()

8

D = DihedralGroup(4)

gap(D)

Group( [ (1,2,3,4), (1,4)(2,3) ] )