Number of (n+1)X7 0..1 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) such that rows of b(i,j) and columns of c(i,j) are lexicographically nondecreasing.
A203450
Number of (n+1)X7 0..1 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) such that rows of b(i,j) and columns of c(i,j) are lexicographically nondecreasing.
Terms
- a(0) =256a(1) =786a(2) =13777a(3) =265581a(4) =5972476a(5) =125140148a(6) =2396938985a(7) =41222650083a(8) =637232759390
External references
- oeis: A203450