Number of n X 7 array permutations with each element moving zero or one space horizontally or diagonally.
A189447
Number of n X 7 array permutations with each element moving zero or one space horizontally or diagonally.
Terms
- a(0) =21a(1) =3136a(2) =313136a(3) =33735505a(4) =3586575040a(5) =381987110556
External references
- oeis: A189447