Number of nX4 0..1 arrays with every repeated value in every row and column greater than or equal to the previous repeated value.
A267731
Number of nX4 0..1 arrays with every repeated value in every row and column greater than or equal to the previous repeated value.
Terms
- a(0) =15a(1) =225a(2) =3375a(3) =39330a(4) =451278a(5) =4705642a(6) =47293550a(7) =453985015a(8) =4225323881a(9) =38217977443a(10) =337785304853
External references
- oeis: A267731