Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1000-1111-0100 pattern in any orientation.
A146408
Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1000-1111-0100 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =7a(6) =21a(7) =53a(8) =267a(9) =1477a(10) =11799a(11) =115813a(12) =1314119a(13) =18659927a(14) =340219403a(15) =7888629683a(16) =233265020067
External references
- oeis: A146408