Number of nonnegative integer matrices with sum of entries equal to n and no zero rows or columns, whose entries are all distinct.
A321660
Number of nonnegative integer matrices with sum of entries equal to n and no zero rows or columns, whose entries are all distinct.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =5a(4) =5a(5) =9a(6) =45a(7) =49a(8) =85a(9) =125a(10) =233a(11) =273a(12) =417a(13) =529a(14) =745a(15) =2573a(16) =2861a(17) =4761a(18) =6837a(19) =10489a(20) =14317a(21) =22637a(22) =28289a(23) =40041a(24) =52041a(25) =70177a(26) =88561a(27) =117605a(28) =234773a(29) =274761
External references
- oeis: A321660