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

A233352

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

Terms

    a(0) =464a(1) =11562a(2) =256099a(3) =5139176a(4) =95102518a(5) =1651408189a(6) =27271105465a(7) =432499997768

External references