Editing Thue–Morse sequence (section)

=== In combinatorial game theory ===
The set of ''evil numbers'' (numbers <math>n</math> with <math>t_n=0</math>) forms a subspace of the nonnegative integers under [[nim-addition]] ([[bitwise operation|bitwise]] [[exclusive or]]).  For the game of [[Kayles]], evil [[nim-value]]s occur for few (finitely many) positions in the game, with all remaining positions having odious nim-values.