Number of 3Xn 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value 2-x(i,j).
A230677
Number of 3Xn 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value 2-x(i,j).
Terms
- a(0) =0a(1) =81a(2) =1173a(3) =18915a(4) =340563a(5) =6081561a(6) =108108231a(7) =1923264723a(8) =34219066161a(9) =608809697883
External references
- oeis: A230677