Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 01010-11111 pattern in any orientation.
A147065
Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 01010-11111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =4a(7) =7a(8) =20a(9) =27a(10) =84a(11) =153a(12) =692a(13) =1605a(14) =7549a(15) =19036a(16) =103045a(17) =315223a(18) =2201412a(19) =8341738a(20) =68161042a(21) =299153867a(22) =2851751081a(23) =14915115066
External references
- oeis: A147065