Number of nonnegative integer matrices with sum of entries equal to n, no zero rows or columns, and distinct rows and columns.
A321515
Number of nonnegative integer matrices with sum of entries equal to n, no zero rows or columns, and distinct rows and columns.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =19a(4) =137a(5) =1209a(6) =12899a(7) =160395a(8) =2276229a(9) =36323217a(10) =643848837a(11) =12551081501a(12) =266868756473
External references
- oeis: A321515