T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with no 2X2 subblock having its maximum diagonal element less than its minimum antidiagonal element.

A250956

T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with no 2X2 subblock having its maximum diagonal element less than its minimum antidiagonal element.

Terms

    a(0) =15a(1) =56a(2) =56a(3) =209a(4) =392a(5) =209a(6) =780a(7) =2744a(8) =2744a(9) =780a(10) =2911a(11) =19208a(12) =36016a(13) =19208a(14) =2911a(15) =10864a(16) =134456a(17) =472712a(18) =472712a(19) =134456a(20) =10864a(21) =40545a(22) =941192a(23) =6204344a(24) =11633448a(25) =6204344a(26) =941192a(27) =40545a(28) =151316a(29) =6588344

External references