Number of n X 4 array permutations with each element moving zero or one space horizontally, diagonally or antidiagonally.
A189645
Number of n X 4 array permutations with each element moving zero or one space horizontally, diagonally or antidiagonally.
Terms
- a(0) =5a(1) =185a(2) =4277a(3) =107080a(4) =2631821a(5) =64890337a(6) =1598901325a(7) =39401919001a(8) =970964720320
External references
- oeis: A189645