Number of (4+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*x(i,j), i=1..4+1} nondecreasing.

A233065

Number of (4+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*x(i,j), i=1..4+1} nondecreasing.

Terms

    a(0) =66a(1) =564a(2) =4393a(3) =30692a(4) =197625a(5) =1180594a(6) =6637131a(7) =35376058a(8) =180164000a(9) =881727864a(10) =4167848342a(11) =19104362313a(12) =85219992355a(13) =371017908349

External references