Number of (n+1)X(3+1) 0..2 arrays x(i,j) with row sums sum{j^2*x(i,j), j=1..3+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..n+1} nondecreasing.

A232782

Number of (n+1)X(3+1) 0..2 arrays x(i,j) with row sums sum{j^2*x(i,j), j=1..3+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..n+1} nondecreasing.

Terms

    a(0) =338a(1) =9315a(2) =220424a(3) =4237458a(4) =67436728a(5) =946103684a(6) =11847657204a(7) =133699131246

External references