T(n,k)=Number of (n+1)X(k+1) 0..3 arrays x(i,j) with row sums sum{j^2*x(i,j), j=1..k+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..n+1} nondecreasing.
A232708
T(n,k)=Number of (n+1)X(k+1) 0..3 arrays x(i,j) with row sums sum{j^2*x(i,j), j=1..k+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..n+1} nondecreasing.
Terms
- a(0) =86a(1) =542a(2) =542a(3) =2694a(4) =13471a(5) =2694a(6) =11181a(7) =254980a(8) =254980a(9) =11181a(10) =40292a(11) =3880262a(12) =19199814a(13) =3880262a(14) =40292a(15) =129801a(16) =49992862a(17) =1153538563a(18) =1153538563a(19) =49992862a(20) =129801a(21) =380718a(22) =560453801a(23) =57797914757a(24) =278440218263a(25) =57797914757a(26) =560453801
External references
- oeis: A232708