Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 10000-11100-00111-00001 pattern in any orientation.
A147383
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 10000-11100-00111-00001 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =5a(6) =9a(7) =25a(8) =47a(9) =195a(10) =767a(11) =3745a(12) =18201a(13) =111311a(14) =686767a(15) =6208537a(16) =52616577
External references
- oeis: A147383