Number of matrices with nonnegative integer entries and without zero rows or columns such that sum of all entries is equal to n.
A120733
Number of matrices with nonnegative integer entries and without zero rows or columns such that sum of all entries is equal to n.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =33a(4) =281a(5) =2961a(6) =37277a(7) =546193a(8) =9132865a(9) =171634161a(10) =3581539973a(11) =82171451025
External references
- oeis: A120733