Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-0110-0011 pattern in any orientation.
A146448
Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-0110-0011 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =7a(6) =15a(7) =49a(8) =233a(9) =1205a(10) =7091a(11) =56369a(12) =554977a(13) =6653663a(14) =98474615a(15) =1800719003a(16) =40485995917
External references
- oeis: A146448