[See also Symbolic dynamics] Jean-Paul Allouche/J. Peyriere/Z. Wen/Z. Wen: Some properties of the Hankel determinants associated with the Morse sequence. Ann. Inst. Fourier 48 (1998), 1-27. Jean-Paul Allouche a.o.: A relative of the Thue-Morse sequence. Discrete Math. 139 (1995), 455-461. 24649 Johannes Morgenbesser/Jeffrey Shallit/Thomas Stoll: Thue-Morse at multiples of an integer. Internet 2010, 14p.