Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1101-0111-0010 pattern in any orientation.
A147240
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1101-0111-0010 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =19a(7) =31a(8) =655a(9) =1339a(10) =18309a(11) =48007a(12) =1442201a(13) =4567021a(14) =367217353a(15) =1460020323a(16) =228615404039
External references
- oeis: A147240