Number of (n+1)X(1+1) 0..3 arrays x(i,j) with row sums sum{j^3*x(i,j), j=1..1+1} nondecreasing, and column sums sum{i^3*x(i,j), i=1..n+1} nondecreasing.

A232754

Number of (n+1)X(1+1) 0..3 arrays x(i,j) with row sums sum{j^3*x(i,j), j=1..1+1} nondecreasing, and column sums sum{i^3*x(i,j), i=1..n+1} nondecreasing.

Terms

    a(0) =86a(1) =561a(2) =2799a(3) =11642a(4) =42136a(5) =135738a(6) =398282a(7) =1080962a(8) =2742442a(9) =6562552a(10) =14924881a(11) =32441051a(12) =67731876a(13) =136394979a(14) =265881588a(15) =503206400a(16) =927099641a(17) =1666476136a(18) =2928247968a(19) =5038451724a(20) =8502451244a(21) =14091189678a(22) =22963981249a(23) =36840064368

External references