Number of horizontal, vertical or knight-move neighbor colorings of an nX2 array with new integer colors introduced in row major order.
A216660
Number of horizontal, vertical or knight-move neighbor colorings of an nX2 array with new integer colors introduced in row major order.
Terms
- a(0) =1a(1) =4a(2) =25a(3) =279a(4) =4800a(5) =116635a(6) =3760019a(7) =153831836a(8) =7730921915a(9) =465562795125
External references
- oeis: A216660