Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 3X2 zee 1,1 1,2 1,3 2,3 2,4 in any orientation.
A146134
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 3X2 zee 1,1 1,2 1,3 2,3 2,4 in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =5a(4) =17a(5) =39a(6) =241a(7) =1589a(8) =13237a(9) =156057a(10) =2242755a(11) =43222843a(12) =1066074605
External references
- oeis: A146134