OFFSET
1,4
COMMENTS
Latin 4-dimensional hypercubes (Latin polyhedra) are a generalization of Latin cube and Latin square.
REFERENCES
T. Ito, Method, equipment, program and storage media for producing tables, Publication number JP2004-272104A, Japan Patent Office (written in Japanese).
LINKS
B. D. McKay and I. M. Wanless, A census of small latin hypercubes, SIAM J. Discrete Math. 22, (2008) 719-736.
CROSSREFS
KEYWORD
hard,nonn,more
AUTHOR
Toru Ito (t_ito(AT)mue.biglobe.ne.jp), Nov 28 2004
EXTENSIONS
a(5) from Ian Wanless, May 01 2008
Edited by N. J. A. Sloane, Dec 06 2009 at the suggestion of Vladeta Jovovic
STATUS
approved