T(n,k)=Number of (n+1)X(k+1) 0..6 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.
A203672
T(n,k)=Number of (n+1)X(k+1) 0..6 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) =728a(1) =10530a(2) =10530a(3) =111648a(4) =317138a(5) =111648a(6) =1049566a(7) =6780455a(8) =6780455a(9) =1049566a(10) =8749285a(11) =108864887a(12) =258487684a(13) =108864887a(14) =8749285a(15) =67221763a(16) =1447373824a(17) =7178236454a(18) =7178236454a(19) =1447373824a(20) =67221763a(21) =482381877a(22) =16256618529
External references
- oeis: A203672