Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1110-0111-0001 pattern in any orientation.
A147398
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1110-0111-0001 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =63a(9) =111a(10) =801a(11) =1619a(12) =12671a(13) =27823a(14) =349917a(15) =870983a(16) =40498015a(17) =122215163a(18) =11398125347a(19) =41676149367
External references
- oeis: A147398