Number of horizontal, vertical, diagonal or knight-move neighbor colorings of an nX3 array with new integer colors introduced in row major order.
A216692
Number of horizontal, vertical, diagonal or knight-move neighbor colorings of an nX3 array with new integer colors introduced in row major order.
Terms
- a(0) =2a(1) =9a(2) =189a(3) =11730a(4) =1561834a(5) =370625430a(6) =139733635588
External references
- oeis: A216692