OFFSET
0,2
LINKS
R. L. E. Schwarzenberger, Colour symmetry, Bulletin of the London Mathematical Society 16.3 (1984): 216-229.
B. Souvignier, Enantiomorphism of crystallographic groups in higher dimensions with results in dimensions up to 6, Acta Cryst., A59 (2003), 210-220.
FORMULA
CROSSREFS
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Apr 08 2019
EXTENSIONS
a(0), a(4) from Andrey Zabolotskiy, Apr 09 2019
STATUS
approved