Number of toroidal n X 3 binary arrays, allowing rotation and/or reflection of the rows and/or the columns.
A222189
Number of toroidal n X 3 binary arrays, allowing rotation and/or reflection of the rows and/or the columns.
Terms
- a(0) =4a(1) =13a(2) =36a(3) =158a(4) =708a(5) =4236a(6) =26412a(7) =180070a(8) =1256914a(9) =8999762a(10) =65225244a(11) =477772294a(12) =3525803320a(13) =26185264801a(14) =195490126328
External references
- oeis: A222189