Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 111-110-111 pattern in any orientation.
A146287
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 111-110-111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =13a(6) =49a(7) =205a(8) =661a(9) =1997a(10) =13307a(11) =88591a(12) =614455a(13) =6581035a(14) =95397503a(15) =1522572859a(16) =23440615715a(17) =367710019427
External references
- oeis: A146287