Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-1111 pattern in any orientation.
A146227
Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-1111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =13a(6) =37a(7) =183a(8) =817a(9) =5601a(10) =59649a(11) =681701a(12) =9890411a(13) =176577709a(14) =3939621645a(15) =118135623109
External references
- oeis: A146227