Number of non-equivalent ways to place 6 non-attacking ferses on an n X n board.
A278685
Number of non-equivalent ways to place 6 non-attacking ferses on an n X n board.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =76a(4) =3773a(5) =66201a(6) =651193a(7) =4318451a(8) =21754341a(9) =89267490a(10) =312974387a(11) =968069337a(12) =2704548145a(13) =6942663519a(14) =16594368633a(15) =37311795887a(16) =79570707969a(17) =162013125016a(18) =316669793867a(19) =596873304925
External references
- oeis: A278685