Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1110-0100-0111 pattern in any orientation.
A146872
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1110-0100-0111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =17a(7) =29a(8) =597a(9) =1065a(10) =7937a(11) =22829a(12) =200213a(13) =509041a(14) =58873393a(15) =209855541a(16) =45265003821a(17) =200942562233
External references
- oeis: A146872