1/16 the number of (n+1)X9 binary arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor.
A183810
1/16 the number of (n+1)X9 binary arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor.
Terms
- a(0) =2187a(1) =79605a(2) =2518389a(3) =89998565a(4) =3023598287a(5) =106324742825
External references
- oeis: A183810