Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,2,1,1,1 for x=0,1,2,3,4.
A197543
Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,2,1,1,1 for x=0,1,2,3,4.
Terms
- a(0) =6a(1) =58a(2) =121a(3) =834a(4) =2095a(5) =12019a(6) =48014a(7) =225222a(8) =831160a(9) =3944345a(10) =16773428a(11) =72763421a(12) =300929135a(13) =1319535052a(14) =5704373966a(15) =24566253078a(16) =104395539577a(17) =449962758422
External references
- oeis: A197543