Number of (2*n)Xn binary arrays with rows in nonincreasing order, 2 ones in every column and no more than 3 ones in any row.
A188417
Number of (2*n)Xn binary arrays with rows in nonincreasing order, 2 ones in every column and no more than 3 ones in any row.
Terms
- a(0) =1a(1) =3a(2) =16a(3) =124a(4) =1308a(5) =17443a(6) =282349a(7) =5396178a(8) =119324602a(9) =3005520274a(10) =85152637884
External references
- oeis: A188417