Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1010-1111-1000 pattern in any orientation.
A146643
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1010-1111-1000 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =17a(7) =21a(8) =589a(9) =1201a(10) =13235a(11) =33481a(12) =725903a(13) =2170199a(14) =155541033a(15) =580262243a(16) =73632762107a(17) =340925948339
External references
- oeis: A146643