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

A233375

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

Terms

    a(0) =28a(1) =98a(2) =286a(3) =729a(4) =1678a(5) =3555a(6) =7048a(7) =13215a(8) =23641a(9) =40618a(10) =67389a(11) =108421a(12) =169774a(13) =259497a(14) =388144a(15) =569338a(16) =820471a(17) =1163461a(18) =1625690a(19) =2240996a(20) =3050879a(21) =4105789a(22) =5466649a(23) =7206472a(24) =9412271a(25) =12187059a(26) =15652184a(27) =19949789a(28) =25245633a(29) =31732052

External references