Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-1111-1000 pattern in any orientation.
A146717
Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-1111-1000 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =5a(6) =17a(7) =39a(8) =155a(9) =745a(10) =4705a(11) =39573a(12) =369483a(13) =3970963a(14) =54943873a(15) =950039207a(16) =20417177215a(17) =545483266919
External references
- oeis: A146717