Number of n X 3 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally or vertically, top left element zero, and 1 appearing before 2 in row major order.

A233013

Number of n X 3 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally or vertically, top left element zero, and 1 appearing before 2 in row major order.

Terms

    a(0) =5a(1) =74a(2) =1202a(3) =19643a(4) =321125a(5) =5249894a(6) =85827722a(7) =1403151863a(8) =22939385045a(9) =375023830514

External references