Number of (n+1)X(1+1) 0..3 arrays x(i,j) with row sums sum{j*x(i,j), j=1..1+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..n+1} nondecreasing.
A233053
Number of (n+1)X(1+1) 0..3 arrays x(i,j) with row sums sum{j*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) =84a(1) =567a(2) =3133a(3) =14845a(4) =63271a(5) =247417a(6) =902423a(7) =3108716a(8) =10209449a(9) =32207605a(10) =98154943a(11) =290310578a(12) =836513294a(13) =2355540855a(14) =6499105996a(15) =17608261667a(16) =46934388222a(17) =123274868963
External references
- oeis: A233053