Number of (n+1)X(4+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..4+1} nondecreasing, and column sums sum{i*x(i,j), i=1..n+1} nondecreasing.
A233061
Number of (n+1)X(4+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..4+1} nondecreasing, and column sums sum{i*x(i,j), i=1..n+1} nondecreasing.
Terms
- a(0) =34a(1) =319a(2) =2875a(3) =30692a(4) =334580a(5) =3654675a(6) =39886178a(7) =433495407a(8) =4690717033a(9) =50556528980
External references
- oeis: A233061