Let be the classical Thue-Morse sequence with denoting the sum of the digits in the binary expansion of . A well-known result of Newman  says that for all . Drmota and Skalba  showed that the arithmetic progression of indices can be replaced by with any fixed ; positivity was shown to hold for all but finitely many . This talk is concerned about generalizations. Let be any given base, for and be the generalized Thue-Morse sequence, where denotes the sum of digits in the -ary digit expansion of . We first observe trivial Newman-like phenomena whenever . In the main part of the talk we show that the original case inherits Newman-like phenomena for every even and large classes of arithmetic progressions of indices. This, in particular, also extends a result by Dumont to the general -case.
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