Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 110-111-010 pattern in any orientation.
A146247
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 110-111-010 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =7a(5) =21a(6) =73a(7) =363a(8) =1597a(9) =12869a(10) =120523a(11) =1325159a(12) =19641005a(13) =334866625a(14) =7674660113a(15) =211567083435
External references
- oeis: A146247