Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 110-111-011 pattern in any orientation.
A146249
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 110-111-011 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =15a(7) =25a(8) =133a(9) =219a(10) =1457a(11) =2933a(12) =35543a(13) =83075a(14) =3126293a(15) =8900677a(16) =367544923a(17) =1223346993a(18) =70409245499a(19) =274415748801
External references
- oeis: A146249