Number of (n+1) X (4+1) 0..3 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2 (constant-stress 1 X 1 tilings).
A234486
Number of (n+1) X (4+1) 0..3 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2 (constant-stress 1 X 1 tilings).
Terms
- a(0) =3686a(1) =13554a(2) =49784a(3) =183422a(4) =677138a(5) =2505400a(6) =9288710a(7) =34509914a(8) =128461544a(9) =479146446a(10) =1790472578a(11) =6703375016a(12) =25141441190a(13) =94466340970a(14) =355552667288
External references
- oeis: A234486