Number of (n+1) X (3+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 5, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

A235193

Number of (n+1) X (3+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 5, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

Terms

    a(0) =1880a(1) =4724a(2) =12176a(3) =35868a(4) =105208a(5) =333340a(6) =1043256a(7) =3446068a(8) =11230320a(9) =38241780a(10) =128423464a(11) =448265876a(12) =1541798936a(13) =5493045164a(14) =19259557328a(15) =69772185756a(16) =248380454616a(17) =911885089884

External references