Number of ways of placing n nonattacking (normal) queens on n X n board, solutions similar on the torus count only once.
A062165
Number of ways of placing n nonattacking (normal) queens on n X n board, solutions similar on the torus count only once.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =1a(4) =1a(5) =1a(6) =3a(7) =4a(8) =13a(9) =36a(10) =115a(11) =813a(12) =3083a(13) =21001a(14) =131859a(15) =868613
External references
- oeis: A062165