Irregular triangle read by rows: T(n, k) = number of inequivalent (mod the dihedral group D_8 of order 8) ways to place k nonattacking knights on an n X n board.
A243716
Irregular triangle read by rows: T(n, k) = number of inequivalent (mod the dihedral group D_8 of order 8) ways to place k nonattacking knights on an n X n board.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =1a(4) =1a(5) =3a(6) =7a(7) =9a(8) =6a(9) =2a(10) =3a(11) =18a(12) =40a(13) =66a(14) =49a(15) =30a(16) =8a(17) =3a(18) =6a(19) =43a(20) =195a(21) =609a(22) =1244a(23) =1767a(24) =1710a(25) =1148a(26) =510a(27) =154a(28) =31a(29) =6
External references
- oeis: A243716