Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1010-1111-1010 pattern in any orientation.
A147439
Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1010-1111-1010 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =3a(6) =9a(7) =19a(8) =46a(9) =175a(10) =744a(11) =3837a(12) =22276a(13) =149923a(14) =1180818a(15) =11235559
External references
- oeis: A147439