Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,3,1,1,1 for x=0,1,2,3,4.
A197395
Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,3,1,1,1 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =1a(2) =17a(3) =547a(4) =19603a(5) =1982913a(6) =534127371a(7) =330460207137
External references
- oeis: A197395