Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 0110-1111-0100 pattern in any orientation.
A146593
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 0110-1111-0100 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =21a(6) =51a(7) =327a(8) =1675a(9) =7635a(10) =91085a(11) =1248699a(12) =15566521a(13) =331389569a(14) =6715390709a(15) =209774176475
External references
- oeis: A146593