Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1100-0111-0100 pattern in any orientation.
A147156
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1100-0111-0100 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =211a(9) =393a(10) =3687a(11) =9027a(12) =129263
External references
- oeis: A147156