Number of free tree-like polycubes of size n in three dimensions.

A304196

Number of free tree-like polycubes of size n in three dimensions.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =6a(4) =21a(5) =91a(6) =484a(7) =2817a(8) =17788a(9) =116741a(10) =788081a(11) =5414701a(12) =37703459a(13) =265182187

External references