Number of binary pattern classes in the (3,n)-rectangular grid: two patterns are in same class if one of them can be obtained by a reflection or 180-degree rotation of the other.
A225827
Number of binary pattern classes in the (3,n)-rectangular grid: two patterns are in same class if one of them can be obtained by a reflection or 180-degree rotation of the other.
Terms
- a(0) =1a(1) =6a(2) =24a(3) =168a(4) =1120a(5) =8640a(6) =66816a(7) =529920a(8) =4212736a(9) =33632256a(10) =268713984a(11) =2148630528a(12) =17184194560a(13) =137456517120
External references
- oeis: A225827