Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1001-1111-1000 pattern in any orientation.
A146840
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1001-1111-1000 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =17a(7) =21a(8) =525a(9) =997a(10) =11539a(11) =28687a(12) =537003
External references
- oeis: A146840