Number of (n+1) X (2+1) 0..5 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).
A235180
Number of (n+1) X (2+1) 0..5 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) =212a(1) =560a(2) =1400a(3) =3796a(4) =9780a(5) =27080a(6) =71244a(7) =200164a(8) =535384a(9) =1520236a(10) =4122676a(11) =11802552a(12) =32387932a(13) =93334500a(14) =258770168a(15) =749813004a(16) =2097549460a(17) =6106147288a(18) =17214643468a(19) =50312715684a(20) =142794762392a(21) =418766264044
External references
- oeis: A235180