Number of (n+1)X(3+1) 0..1 arrays x(i,j) with row sums sum{j^4*x(i,j), j=1..3+1} nondecreasing, and column sums sum{i^4*x(i,j), i=1..n+1} nondecreasing.

A232792

Number of (n+1)X(3+1) 0..1 arrays x(i,j) with row sums sum{j^4*x(i,j), j=1..3+1} nondecreasing, and column sums sum{i^4*x(i,j), i=1..n+1} nondecreasing.

Terms

    a(0) =25a(1) =130a(2) =650a(3) =2942a(4) =11819a(5) =42305a(6) =127788a(7) =340647a(8) =812254a(9) =1845329a(10) =4090533a(11) =8883930a(12) =18856951a(13) =39064639a(14) =78110927a(15) =150282496a(16) =279339615a(17) =503544700a(18) =885775170a(19) =1527791237a(20) =2592456480a(21) =4335154285a(22) =7134155240a(23) =11544683457

External references