Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 11000-01111-11000 pattern in any orientation.
A147459
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 11000-01111-11000 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =9a(6) =17a(7) =31a(8) =97a(9) =415a(10) =1502a(11) =7931a(12) =40536a(13) =274361a(14) =1932218a(15) =18327587a(16) =174386942
External references
- oeis: A147459