Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0111-0011 pattern in any orientation.
A147210
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0111-0011 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =19a(7) =31a(8) =671a(9) =1393a(10) =17427a(11) =44279a(12) =1106663a(13) =3412457a(14) =320938143a(15) =1265591403a(16) =240272372207
External references
- oeis: A147210