Number of n X 3 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value 2-x(i,j).

A230179

Number of n X 3 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value 2-x(i,j).

Terms

    a(0) =3a(1) =27a(2) =231a(3) =1971a(4) =16815a(5) =143451a(6) =1223799a(7) =10440387a(8) =89068287a(9) =759853035a(10) =6482404167a(11) =55302225363a(12) =471790411599

External references