A polybe is a polyform formed from a polycubes by removing of half of each cube such that at least half of the original join between cubes is
retained. The numbers of polybes of orders 
, 2, ... are 1, 3, 17, 190, 2179, 27678, ... (OEIS A088678).
Polybe
See also
PolyformExplore with Wolfram|Alpha
References
Clarke, A. L. "Polybes." http://www.recmath.com/PolyPages/PolyPages/Polybes.htm.Sloane, N. J. A. Sequence A088678 in "The On-Line Encyclopedia of Integer Sequences."Referenced on Wolfram|Alpha
PolybeCite this as:
Weisstein, Eric W. "Polybe." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Polybe.html