Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 01000-11111-01000 pattern in any orientation.
A147020
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 01000-11111-01000 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =1a(6) =15a(7) =9a(8) =133a(9) =33a(10) =3625a(11) =1063a(12) =187163a(13) =37071a(14) =15421524a(15) =1848587a(16) =2304715815a(17) =239808955a(18) =763574051396a(19) =59268926793
External references
- oeis: A147020