Number of 2 X n 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, diagonally or antidiagonally, top left element zero, and 1 appearing before 2 in row major order.
A233099
Number of 2 X n 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, diagonally or antidiagonally, top left element zero, and 1 appearing before 2 in row major order.
Terms
- a(0) =3a(1) =11a(2) =65a(3) =386a(4) =2315a(5) =13886a(6) =83315a(7) =499886a(8) =2999315a(9) =17995886a(10) =107975315a(11) =647851886a(12) =3887111315a(13) =23322667886a(14) =139936007315a(15) =839616043886
External references
- oeis: A233099