A059105 - OEIS

A059105

Number of n-dimensional torsion-free crystallographic groups with trivial center.

%I #4 Nov 12 2015 01:28:47

%S 0,0,1,4,101,5004

%N Number of n-dimensional torsion-free crystallographic groups with trivial center.

%H W. Plesken and T. Schulz, <a href="http://wwwb.math.rwth-aachen.de/carat/">CARAT Homepage</a>

%H W. Plesken and T. Schulz, <a href="/A006226/a006226.pdf">CARAT Homepage</a> [Cached copy in pdf format (without subsidiary pages), with permission]

%H W. Plesken and T. Schulz, <a href="/A006226/a006226_1.pdf">Introduction to CARAT</a> [Cached copy in pdf format (without subsidiary pages), with permission]

%Y Cf. A004027, A004028, A004029, A059104.

%K nonn,hard,nice,more

%O 1,4

%A Tilman Schulz (tilman(AT)momo.math.rwth-aachen.de), Feb 13 2001