T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements greater than the maximum of its antidiagonal elements.

A251028

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements greater than the maximum of its antidiagonal elements.

Terms

    a(0) =110a(1) =526a(2) =526a(3) =1966a(4) =2546a(5) =1966a(6) =6321a(7) =8207a(8) =8207a(9) =6321a(10) =18330a(11) =23404a(12) =20608a(13) =23404a(14) =18330a(15) =49481a(16) =60044a(17) =51347a(18) =51347a(19) =60044a(20) =49481a(21) =126955a(22) =144737a(23) =118871a(24) =119632a(25) =118871a(26) =144737a(27) =126955a(28) =314337a(29) =334167

External references