Number of (2*n)Xn binary arrays with nonzero rows in decreasing order, no more than 3 ones in any row and exactly 2 ones in every column.
A188450
Number of (2*n)Xn binary arrays with nonzero rows in decreasing order, no more than 3 ones in any row and exactly 2 ones in every column.
Terms
- a(0) =0a(1) =1a(2) =8a(3) =66a(4) =722a(5) =9955a(6) =165252a(7) =3221806a(8) =72445292a(9) =1851203574a(10) =53113148720
External references
- oeis: A188450