Number of (n+1) X (2+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).
A235011
Number of (n+1) X (2+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).
Terms
- a(0) =104a(1) =224a(2) =488a(3) =1112a(4) =2568a(5) =6088a(6) =14600a(7) =35560a(8) =87368a(9) =216680a(10) =540680a(11) =1356968a(12) =3419592a(13) =8648296a(14) =21929864a(15) =55731496a(16) =141870920a(17) =361640936a(18) =922818824a(19) =2356779176a(20) =6022859976a(21) =15399604072a(22) =39390323336a(23) =100787331112a(24) =257945856584
External references
- oeis: A235011