Number of (n+1) X (4+1) 0..5 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).
A235094
Number of (n+1) X (4+1) 0..5 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) =2580a(1) =4820a(2) =9460a(3) =21264a(4) =48844a(5) =121768a(6) =306532a(7) =813576a(8) =2175660a(9) =6047320a(10) =16929348a(11) =48865480a(12) =141911020a(13) =422528408a(14) =1263337092a(15) =3855011816a(16) =11785843980a(17) =36637377848a(18) =113858844484a(19) =358743669288
External references
- oeis: A235094