Number of inequivalent (rotationally and reflectively distinct) ways to place n nonattacking empresses on n X n board.
A218244
Number of inequivalent (rotationally and reflectively distinct) ways to place n nonattacking empresses on n X n board.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =6a(5) =21a(6) =75a(7) =415a(8) =2621a(9) =21066a(10) =195485a(11) =2083543a(12) =24744474a(13) =323438322a(14) =4596672672a(15) =70440521310
External references
- oeis: A218244