Number of (n+1)X(4+1) 0..1 arrays x(i,j) with row sums sum{j^3*x(i,j), j=1..4+1} nondecreasing, and column sums sum{i^3*x(i,j), i=1..n+1} nondecreasing.

A232857

Number of (n+1)X(4+1) 0..1 arrays x(i,j) with row sums sum{j^3*x(i,j), j=1..4+1} nondecreasing, and column sums sum{i^3*x(i,j), i=1..n+1} nondecreasing.

Terms

    a(0) =41a(1) =336a(2) =2942a(3) =24520a(4) =178630a(5) =1054179a(6) =4995346a(7) =20815986a(8) =81415483a(9) =310059665a(10) =1152701225a(11) =4126983674a(12) =14018997429a(13) =44827689272a(14) =135234277395a(15) =388552022417

External references