Number of (n+1) X (6+1) 0..3 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings).

A235287

Number of (n+1) X (6+1) 0..3 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings).

Terms

    a(0) =472a(1) =572a(2) =680a(3) =908a(4) =1168a(5) =1724a(6) =2408a(7) =3884a(8) =5872a(9) =10172a(10) =16520a(11) =30188a(12) =52048a(13) =98684a(14) =178088a(15) =345644a(16) =644272a(17) =1267772a(18) =2415560a(19) =4789868a(20) =9261328a(21) =18440444a(22) =36008168a(23) =71852204a(24) =141250672a(25) =282173372a(26) =557313800a(27) =1113971948a(28) =2207501008a(29) =4413691004

External references