Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1101-0111 pattern in any orientation.
A146729
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1101-0111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =17a(5) =35a(6) =131a(7) =817a(8) =4781a(9) =41379a(10) =493009a(11) =5930505a(12) =104085935a(13) =2108933179
External references
- oeis: A146729