Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 0001-1101-0111 pattern in any orientation.
A147260
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 0001-1101-0111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =5a(5) =17a(6) =49a(7) =213a(8) =1189a(9) =5181a(10) =36191a(11) =306061a(12) =3589171
External references
- oeis: A147260