Number of self-avoiding closed paths on an n X 4 grid which pass through four corners ((0,0), (0,3), (n-1,3), (n-1,0)).
A333514
Number of self-avoiding closed paths on an n X 4 grid which pass through four corners ((0,0), (0,3), (n-1,3), (n-1,0)).
Terms
- a(0) =1a(1) =3a(2) =11a(3) =49a(4) =229a(5) =1081a(6) =5123a(7) =24323a(8) =115567a(9) =549253a(10) =2610697a(11) =12409597a(12) =58988239a(13) =280398495a(14) =1332867179a(15) =6335755801a(16) =30116890013a(17) =143160058769a(18) =680508623307
External references
- oeis: A333514