Number of n X 3 0..3 arrays x(i,j) with each element horizontally, vertically or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, and upper left element zero.
A230836
Number of n X 3 0..3 arrays x(i,j) with each element horizontally, vertically or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, and upper left element zero.
Terms
- a(0) =0a(1) =22a(2) =656a(3) =16496a(4) =416540a(5) =10550264a(6) =267165468a(7) =6765343878a(8) =171317073728
External references
- oeis: A230836