Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,2,1,0,0 for x=0,1,2,3,4.
A197176
Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,2,1,0,0 for x=0,1,2,3,4.
Terms
- a(0) =3a(1) =23a(2) =150a(3) =969a(4) =7172a(5) =50864a(6) =367813a(7) =2646379a(8) =19073997a(9) =137434440a(10) =990411767a(11) =7137038938a(12) =51431455178a(13) =370627617651
External references
- oeis: A197176