Number of (n+1) X (3+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).
A234222
Number of (n+1) X (3+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) =1824a(1) =5612a(2) =17448a(3) =56936a(4) =188040a(5) =648536a(6) =2264904a(7) =8215256a(8) =30142344a(9) =114224792a(10) =436849608a(11) =1716521816a(12) =6787144200a(13) =27449810456a(14) =111385692744a(15) =460731399896
External references
- oeis: A234222