Number of n X n 0..3 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 4, and upper left element zero.
A230244
Number of n X n 0..3 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 4, and upper left element zero.
Terms
- a(0) =0a(1) =2a(2) =34a(3) =18218a(4) =38111288a(5) =575915716590
External references
- oeis: A230244