Number of nX3 array permutations with each element remaining in its original row or its original column.
A188806
Number of nX3 array permutations with each element remaining in its original row or its original column.
Terms
- a(0) =6a(1) =82a(2) =2720a(3) =194568a(4) =26101232a(5) =5919004912
External references
- oeis: A188806