Number of horizontal, vertical, diagonal or knight-move neighbor colorings of an nX4 array with new integer colors introduced in row major order.
A216693
Number of horizontal, vertical, diagonal or knight-move neighbor colorings of an nX4 array with new integer colors introduced in row major order.
Terms
- a(0) =5a(1) =90a(2) =11730a(3) =6901440a(4) =11239872497
External references
- oeis: A216693