Number of (n+1)X(n+1) 0..2 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) nondecreasing in column and row directions, respectively.
A203720
Number of (n+1)X(n+1) 0..2 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) nondecreasing in column and row directions, respectively.
Terms
- a(0) =32a(1) =480a(2) =6249a(3) =72777a(4) =808455a(5) =9149941a(6) =108633030a(7) =1362582726a(8) =17889577522a(9) =242706969233
External references
- oeis: A203720