Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1010-1111-0101 pattern in any orientation.
A147435
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1010-1111-0101 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =13a(6) =21a(7) =57a(8) =259a(9) =1017a(10) =4255a(11) =25913a(12) =160493a(13) =1488777a(14) =11698881a(15) =154711435a(16) =1737788683a(17) =30091739925
External references
- oeis: A147435