Triangle read by rows T(n, k) = number of non-equivalent ways to place k non-attacking ferses on an n X n board.
A278688
Triangle read by rows T(n, k) = number of non-equivalent ways to place k non-attacking ferses on an n X n board.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =3a(7) =6a(8) =7a(9) =6a(10) =2a(11) =1a(12) =1a(13) =3a(14) =17a(15) =45a(16) =92a(17) =99a(18) =76a(19) =27a(20) =7a(21) =1a(22) =6a(23) =43a(24) =225a(25) =832a(26) =2102a(27) =3773a(28) =4860a(29) =4643
External references
- oeis: A278688