Number of nX5 array permutations with each element not moving, or moving one space N, SW or SE.
A189431
Number of nX5 array permutations with each element not moving, or moving one space N, SW or SE.
Terms
- a(0) =1a(1) =8a(2) =65a(3) =571a(4) =5680a(5) =52241a(6) =493941a(7) =4681376a(8) =44341381a(9) =420325171a(10) =3983969024a(11) =37773176577a(12) =358128315977
External references
- oeis: A189431