Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 01010-11111-00100 pattern in any orientation.
A147349
Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 01010-11111-00100 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =5a(7) =13a(8) =29a(9) =101a(10) =333a(11) =1235a(12) =7837a(13) =52915a(14) =369366a(15) =3142015a(16) =30618033a(17) =342793771a(18) =4834668744a(19) =81286775163
External references
- oeis: A147349