Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 0100-0100-1111-0010-0010 pattern in any orientation.
A147341
Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 0100-0100-1111-0010-0010 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =3a(7) =9a(8) =19a(9) =39a(10) =125a(11) =481a(12) =2209a(13) =12179a(14) =71971
External references
- oeis: A147341