Number of nX2 array permutations with each element moved by a city block distance of no more than three.
A188959
Number of nX2 array permutations with each element moved by a city block distance of no more than three.
Terms
- a(0) =2a(1) =24a(2) =720a(3) =24024a(4) =570050a(5) =12702057a(6) =298167456a(7) =7208117568a(8) =173161739904
External references
- oeis: A188959