Number of (n+1) X (1+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 7 (constant-stress 1 X 1 tilings).
A234721
Number of (n+1) X (1+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 7 (constant-stress 1 X 1 tilings).
Terms
- a(0) =240a(1) =1096a(2) =4192a(3) =19120a(4) =74496a(5) =339328a(6) =1344640a(7) =6116416a(8) =24606720a(9) =111778816a(10) =455721472a(11) =2067523840a(12) =8527405056a(13) =38641758208a(14) =160972933120a(15) =728673166336
External references
- oeis: A234721