Number of n X (n+1) matrices with nonnegative integer entries and every row and column sum <= 2.
A131237
Number of n X (n+1) matrices with nonnegative integer entries and every row and column sum <= 2.
Terms
- a(0) =1a(1) =6a(2) =79a(3) =1837a(4) =66021a(5) =3374176a(6) =231848191a(7) =20570267229
External references
- oeis: A131237