Number of (n+1)X(1+1) 0..1 arrays x(i,j) with row sums sum{j^2*x(i,j), j=1..1+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..n+1} nondecreasing.
A232871
Number of (n+1)X(1+1) 0..1 arrays x(i,j) with row sums sum{j^2*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) =7a(1) =14a(2) =25a(3) =39a(4) =57a(5) =81a(6) =112a(7) =151a(8) =195a(9) =247a(10) =309a(11) =382a(12) =467a(13) =558a(14) =661a(15) =778a(16) =910a(17) =1054a(18) =1211a(19) =1384a(20) =1574a(21) =1783a(22) =2006a(23) =2246a(24) =2506a(25) =2787a(26) =3090a(27) =3408a(28) =3748a(29) =4112
External references
- oeis: A232871