Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1110-0110-0111 pattern in any orientation.
A147500
Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1110-0110-0111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =3a(6) =9a(7) =19a(8) =37a(9) =159a(10) =849a(11) =4243a(12) =19707a(13) =136969a(14) =1272775a(15) =12839957
External references
- oeis: A147500