Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 110-111-110 pattern in any orientation.
A146267
Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 110-111-110 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =9a(6) =20a(7) =59a(8) =238a(9) =1339a(10) =8950a(11) =63227a(12) =541368a(13) =5931901a(14) =82015459a(15) =1400527040a(16) =28248253548a(17) =677346206953
External references
- oeis: A146267