OFFSET
1,1
COMMENTS
A tetrahedron with integer edges has an integer volume only when the volume is a multiple of 3. It is unknown whether such tetrahedra exist for every multiple of 3.
LINKS
K. L. Dove and J. S. Sumner, Tetrahedra with Integer Edges and Integer Volume, Mathematics Magazine, Volume 65(2), April 1992, pp. 104-111.
CROSSREFS
KEYWORD
more,nonn
AUTHOR
William Rex Marshall, Feb 15 2007
STATUS
approved