Number of 3Xn 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero.
A230615
Number of 3Xn 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =30a(4) =260a(5) =2358a(6) =20430a(7) =176774a(8) =1527918a(9) =13204026a(10) =114099558a(11) =985963206a(12) =8519922122a(13) =73622499446a(14) =636187953758
External references
- oeis: A230615