Number of (2+1)X(n+1) 0..2 arrays x(i,j) with row sums sum{j*x(i,j), j=1..n+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..2+1} nondecreasing.
A233051
Number of (2+1)X(n+1) 0..2 arrays x(i,j) with row sums sum{j*x(i,j), j=1..n+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..2+1} nondecreasing.
Terms
- a(0) =117a(1) =1112a(2) =8494a(3) =55833a(4) =321015a(5) =1643645a(6) =7654949a(7) =32878503a(8) =131625788a(9) =495839830a(10) =1770680805a(11) =6031355004a(12) =19703984612a(13) =62024181142a(14) =188838365213a(15) =557980426201
External references
- oeis: A233051