Number of (6+1)X(n+1) 0..1 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..6+1} nondecreasing.

A233306

Number of (6+1)X(n+1) 0..1 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..6+1} nondecreasing.

Terms

    a(0) =258a(1) =5964a(2) =135636a(3) =2694620a(4) =48504411a(5) =789640245a(6) =11764401320a(7) =161499728247

External references