Number of (n+1)X(4+1) 0..1 arrays x(i,j) with row sums sum{j*x(i,j), j=1..4+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..n+1} nondecreasing.
A233363
Number of (n+1)X(4+1) 0..1 arrays x(i,j) with row sums sum{j*x(i,j), j=1..4+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..n+1} nondecreasing.
Terms
- a(0) =36a(1) =250a(2) =1964a(3) =16113a(4) =117318a(5) =781467a(6) =4826580a(7) =28172630a(8) =156288347a(9) =832235200a(10) =4255521920a(11) =20978491523a(12) =99962490584
External references
- oeis: A233363