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

A233372

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

Terms

    a(0) =28a(1) =117a(2) =444a(3) =1588a(4) =5387a(5) =17645a(6) =56425a(7) =177289a(8) =549976a(9) =1690006a(10) =5158577a(11) =15668130a(12) =47422454a(13) =143161949a(14) =431407408a(15) =1298283373a(16) =3903506520a(17) =11728583997a(18) =35224065039a(19) =105750970102

External references