Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-0100-1111 pattern in any orientation.
A146653
Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-0100-1111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =7a(6) =19a(7) =43a(8) =173a(9) =1027a(10) =6241a(11) =39873a(12) =317065a(13) =3440337a(14) =46130903a(15) =694355761a(16) =12449375951a(17) =281232131103
External references
- oeis: A146653