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

A233057

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

Terms

    a(0) =567a(1) =12943a(2) =230008a(3) =3388003a(4) =42636091a(5) =469323351a(6) =4607489801a(7) =40982900059a(8) =334422112594

External references