Number of nX4 array permutations with every element making zero or one right-handed knight moves (out 2, right 1).
A209539
Number of nX4 array permutations with every element making zero or one right-handed knight moves (out 2, right 1).
Terms
- a(0) =1a(1) =4a(2) =72a(3) =729a(4) =6480a(5) =63504a(6) =635040a(7) =6350400a(8) =63504000a(9) =635040000a(10) =6350400000a(11) =63504000000a(12) =635040000000
External references
- oeis: A209539