Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 110-111-111 pattern in any orientation.
A146273
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 110-111-111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =37a(7) =73a(8) =449a(9) =747a(10) =5801a(11) =13609a(12) =176107a(13) =460513a(14) =50638553a(15) =175114985a(16) =12101446061a(17) =47558080771
External references
- oeis: A146273