Number of n X n array permutations with each element not moving, or moving one space E, S or NW.
A189603
Number of n X n array permutations with each element not moving, or moving one space E, S or NW.
Terms
- a(0) =1a(1) =3a(2) =20a(3) =464a(4) =30283a(5) =5897476a(6) =3394457868
External references
- oeis: A189603