Number of 2 X n 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors.
A208873
Number of 2 X n 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors.
Terms
- a(0) =2a(1) =12a(2) =136a(3) =1798a(4) =24472a(5) =334618a(6) =4578580a(7) =62655190a(8) =857412640a(9) =11733394642a(10) =160567489036
External references
- oeis: A208873