Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0111-0001 pattern in any orientation.
A146659
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0111-0001 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =19a(7) =31a(8) =777a(9) =1691a(10) =27963a(11) =75639a(12) =2292715a(13) =7576569a(14) =826036495a(15) =3496134625a(16) =778953197867
External references
- oeis: A146659