Number of (n+1) X (3+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).
A234723
Number of (n+1) X (3+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) =4192a(1) =12464a(2) =33560a(3) =116168a(4) =360760a(5) =1349336a(6) =4577624a(7) =17961560a(8) =64580152a(9) =261840344a(10) =980480600a(11) =4070568728a(12) =15709810360a(13) =66384051416a(14) =262296459224
External references
- oeis: A234723