Number of nX3 1..(max n,3) arrays with each row and column having unrepeated values.
A221433
Number of nX3 1..(max n,3) arrays with each row and column having unrepeated values.
Terms
- a(0) =6a(1) =12a(2) =12a(3) =576a(4) =66240a(5) =15321600a(6) =5411750400
External references
- oeis: A221433