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arXiv · 1911.10705

The sum of digits function of the base phi expansion of the natural numbers

Michel Dekking
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Abstract

In the base phi expansion any natural number is written uniquely as a sum of powers of the golden mean with digits 0 and 1, where one requires that the product of two consecutive digits is always 0. In this paper we show that the sum of digits function modulo 2 of these expansions is a morphic sequence. In particular we prove that --- like for the Thue-Morse sequence --- the frequency of 0's and 1's in this sequence is equal to 1/2.

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Michel Dekking. 2019-11-25. The sum of digits function of the base phi expansion of the natural numbers. https://arxiv.org/abs/1911.10705

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