Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-1100-0111 pattern in any orientation.
A146691
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-1100-0111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =19a(7) =31a(8) =599a(9) =1163a(10) =13781a(11) =34743a(12) =686711a(13) =2032193a(14) =168115995a(15) =630196685a(16) =103169062863a(17) =486468362253
External references
- oeis: A146691