Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0110-1111-0110 pattern in any orientation.
A146918
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0110-1111-0110 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =3a(5) =5a(6) =11a(7) =28a(8) =126a(9) =465a(10) =2159a(11) =10384a(12) =61419a(13) =350662a(14) =3134292a(15) =24610534a(16) =338289380a(17) =3522169071a(18) =66083867346a(19) =889383602362
External references
- oeis: A146918