Number of nX2 array permutations with each element moved no more than a city block distance of two.
A188953
Number of nX2 array permutations with each element moved no more than a city block distance of two.
Terms
- a(0) =2a(1) =24a(2) =362a(3) =3969a(4) =45288a(5) =532224a(6) =6187928a(7) =71851073a(8) =835579642a(9) =9715691800a(10) =112952196626
External references
- oeis: A188953