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 absolute difference of its antidiagonal elements.

A251055

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 absolute difference of its antidiagonal elements.

Terms

    a(0) =66a(1) =290a(2) =290a(3) =854a(4) =1528a(5) =854a(6) =2243a(7) =4334a(8) =4334a(9) =2243a(10) =5449a(11) =11280a(12) =10289a(13) =11280a(14) =5449a(15) =12858a(16) =25847a(17) =24893a(18) =24893a(19) =25847a(20) =12858a(21) =29759a(22) =56676a(23) =53306a(24) =59215a(25) =53306a(26) =56676a(27) =29759a(28) =68506a(29) =118925

External references