Number of polygonal tiles with n sides with two exits per side and n edges connecting pairs of exits, with no edges between exits on the same side and non-isomorphic under rotational symmetry.
A289191
Number of polygonal tiles with n sides with two exits per side and n edges connecting pairs of exits, with no edges between exits on the same side and non-isomorphic under rotational symmetry.
Terms
- a(0) =0a(1) =2a(2) =4a(3) =22a(4) =112a(5) =1060a(6) =11292a(7) =149448a(8) =2257288a(9) =38720728a(10) =740754220a(11) =15648468804a(12) =361711410384
External references
- oeis: A289191