Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 0110-0110-1111 pattern in any orientation.
A147358
Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 0110-0110-1111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =3a(7) =8a(8) =19a(9) =34a(10) =51a(11) =134a(12) =355a(13) =989a(14) =3419a(15) =12452
External references
- oeis: A147358