Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1100-1111 pattern in any orientation.
A146231
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1100-1111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =5a(4) =17a(5) =35a(6) =163a(7) =959a(8) =6943a(9) =61513a(10) =740733a(11) =9820359a(12) =193942865a(13) =4360418313a(14) =137513801459
External references
- oeis: A146231