T(n,k) is the number of (n+1) X (k+1) 0..2 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 1 (constant-stress 1 X 1 tilings).

A234443

T(n,k) is the number of (n+1) X (k+1) 0..2 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 1 (constant-stress 1 X 1 tilings).

Terms

    a(0) =32a(1) =120a(2) =120a(3) =448a(4) =582a(5) =448a(6) =1680a(7) =2804a(8) =2804a(9) =1680a(10) =6272a(11) =13676a(12) =17200a(13) =13676a(14) =6272a(15) =23520a(16) =66228a(17) =108404a(18) =108404a(19) =66228a(20) =23520a(21) =87808a(22) =324556a(23) =666880a(24) =896112a(25) =666880a(26) =324556a(27) =87808a(28) =329280a(29) =1578036

External references