Number of (n+1) X (1+1) 0..4 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).

A235080

Number of (n+1) X (1+1) 0..4 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) =38a(1) =90a(2) =202a(3) =478a(4) =1078a(5) =2554a(6) =5786a(7) =13726a(8) =31238a(9) =74202a(10) =169642a(11) =403486a(12) =926614a(13) =2206714a(14) =5090042a(15) =12136798a(16) =28113638a(17) =67114074a(18) =156091786a(19) =373047646a(20) =870937078a(21) =2083671802a(22) =4882030682a(23) =11691483166a(24) =27483747014a(25) =65877727194

External references