Number of (n+1) X (4+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3 (constant-stress 1 X 1 tilings).
A234223
Number of (n+1) X (4+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3 (constant-stress 1 X 1 tilings).
Terms
- a(0) =7696a(1) =20724a(2) =56936a(3) =167688a(4) =503272a(5) =1597896a(6) =5162984a(7) =17479656a(8) =60126376a(9) =215032104a(10) =779519336a(11) =2918196648a(12) =11040350632a(13) =42883189416a(14) =167792882024a(15) =670921667496
External references
- oeis: A234223