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

A232872

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

Terms

    a(0) =14a(1) =45a(2) =130a(3) =311a(4) =637a(5) =1235a(6) =2314a(7) =4200a(8) =7228a(9) =11846a(10) =18788a(11) =29081a(12) =44132a(13) =65107a(14) =93928a(15) =132887a(16) =185250a(17) =254624a(18) =345006a(19) =461565a(20) =610287a(21) =798949a(22) =1035882a(23) =1330097a(24) =1692861a(25) =2137519a(26) =2679053a(27) =3333526a(28) =4120225a(29) =5060874

External references