Number of (n+1) X (7+1) 0..3 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3 (constant-stress 1 X 1 tilings).
A235297
Number of (n+1) X (7+1) 0..3 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) =13376a(1) =15692a(2) =18832a(3) =25592a(4) =35936a(5) =58688a(6) =97888a(7) =187184a(8) =358016a(9) =768272a(10) =1623712a(11) =3817232a(12) =8702336a(13) =22073168a(14) =53248288a(15) =143248784a(16) =359277056a(17) =1006831952a(18) =2588024992a(19) =7443849872a(20) =19416695936a(21) =56737632848a(22) =149263917088a(23) =440317917584
External references
- oeis: A235297