1,2

H. T. Croft, K. J. Falconer and R. K. Guy, Unsolved Problems in Geometry, C9.

R. B. Hughes and M. R. Anderson, Simplexity of the cube, Discr. Math., 158 (1996), 99-150.

Cf. A019502, A019503.

Sequence in context: A005157 A019502 A019503 this_sequence A005163 A006116 A122082

Adjacent sequences: A019501 A019502 A019503 this_sequence A019505 A019506 A019507

nonn,hard,nice

N. J. A. Sloane (njas(AT)research.att.com).