T(n,k) is the number of (n+1) X (k+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

A235107

T(n,k) is the number of (n+1) X (k+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

Terms

    a(0) =154a(1) =670a(2) =670a(3) =2900a(4) =2498a(5) =2900a(6) =12578a(7) =9328a(8) =9328a(9) =12578a(10) =54530a(11) =35354a(12) =30312a(13) =35354a(14) =54530a(15) =236496a(16) =135254a(17) =101464a(18) =101464a(19) =135254a(20) =236496a(21) =1025770a(22) =523532a(23) =345280a(24) =304746a(25) =345280a(26) =523532a(27) =1025770a(28) =4449942a(29) =2047890

External references