T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)-x(i-1,j) in the j direction.

A250611

T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)-x(i-1,j) in the j direction.

Terms

    a(0) =11a(1) =26a(2) =26a(3) =57a(4) =64a(5) =57a(6) =120a(7) =140a(8) =140a(9) =120a(10) =247a(11) =290a(12) =297a(13) =290a(14) =247a(15) =502a(16) =586a(17) =592a(18) =592a(19) =586a(20) =502a(21) =1013a(22) =1172a(23) =1153a(24) =1126a(25) =1153a(26) =1172a(27) =1013a(28) =2036a(29) =2336

External references