Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1110-0111 pattern in any orientation.
A146472
Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1110-0111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =9a(6) =23a(7) =85a(8) =375a(9) =2149a(10) =15299a(11) =129877a(12) =1353943a(13) =17475557a(14) =279267939a(15) =5511590965a(16) =133957241929
External references
- oeis: A146472