Number of non-equivalent ways to place 7 non-attacking ferses on an n X n board.

A278686

Number of non-equivalent ways to place 7 non-attacking ferses on an n X n board.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =27a(4) =4860a(5) =164423a(6) =2651890a(7) =25981150a(8) =180378380a(9) =971905679a(10) =4316504623a(11) =16457726539a(12) =55463445891a(13) =168782705327a(14) =471407278652

External references