Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1000-1000-1000-1111 pattern in any orientation.
A147094
Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1000-1000-1000-1111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =7a(5) =15a(6) =31a(7) =73a(8) =307a(9) =1451a(10) =6775a(11) =33773a(12) =192865a(13) =1471507a(14) =13382667a(15) =137085697a(16) =1565839497a(17) =20450552451a(18) =319414253795
External references
- oeis: A147094