Number of n X 4 1..(max n,4) arrays with each row and column having unrepeated values.
A221434
Number of n X 4 1..(max n,4) arrays with each row and column having unrepeated values.
Terms
- a(0) =24a(1) =216a(2) =576a(3) =576a(4) =161280a(5) =283046400a(6) =782137036800
External references
- oeis: A221434