Number of nonnegative integer matrices with sum of entries equal to n and no zero rows or columns, whose nonzero entries are all distinct.

A321659

Number of nonnegative integer matrices with sum of entries equal to n and no zero rows or columns, whose nonzero entries are all distinct.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =9a(4) =9a(5) =17a(6) =161a(7) =169a(8) =313a(9) =465a(10) =5313a(11) =5465a(12) =10457a(13) =15313a(14) =25009a(15) =271929a(16) =286329a(17) =537953a(18) =799121a(19) =1297369a(20) =1805161a(21) =20532897a(22) =21292017a(23) =40508297a(24) =59738825a(25) =97431073a(26) =135137569a(27) =209525865a(28) =2089381929a(29) =2200470833

External references