Number of (n+1)X(2+1) 0..1 arrays x(i,j) with row sums sum{j^3*x(i,j), j=1..2+1} nondecreasing, and column sums sum{i^3*x(i,j), i=1..n+1} nondecreasing.
A232855
Number of (n+1)X(2+1) 0..1 arrays x(i,j) with row sums sum{j^3*x(i,j), j=1..2+1} nondecreasing, and column sums sum{i^3*x(i,j), i=1..n+1} nondecreasing.
Terms
- a(0) =14a(1) =45a(2) =130a(3) =336a(4) =755a(5) =1494a(6) =2696a(7) =4713a(8) =8039a(9) =13380a(10) =21741a(11) =33960a(12) =51312a(13) =75339a(14) =108579a(15) =154222a(16) =216194a(17) =298111a(18) =404477a(19) =540201a(20) =713414a(21) =932397a(22) =1208728a(23) =1553644a(24) =1978226a(25) =2495860a(26) =3124911a(27) =3887013a(28) =4804956a(29) =5907138
External references
- oeis: A232855