Number of nX2 array permutations with each element moved but remaining in its original row or its original column.
A188810
Number of nX2 array permutations with each element moved but remaining in its original row or its original column.
Terms
- a(0) =1a(1) =4a(2) =20a(3) =272a(4) =6032a(5) =205312a(6) =9672448a(7) =601903360a(8) =47722897664
External references
- oeis: A188810