Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1000-1000-1000-1111 pattern in any orientation.
A147098
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1000-1000-1000-1111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =7a(6) =13a(7) =29a(8) =143a(9) =539a(10) =2419a(11) =11799a(12) =70509a(13) =422003a(14) =3669313a(15) =30560805a(16) =384390343
External references
- oeis: A147098