Number of 3Xn 0..2 arrays with exactly floor(3Xn/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
A223116
Number of 3Xn 0..2 arrays with exactly floor(3Xn/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
Terms
- a(0) =0a(1) =22a(2) =269a(3) =5624a(4) =64346a(5) =1435644a(6) =17231678a(7) =394101698a(8) =4795863215a(9) =111385873044
External references
- oeis: A223116