Summation of rational series twisted by strongly B-multiplicative coefficients
Number Theory
2015-05-19 v4
Abstract
We evaluate in closed form series of the type , where is a strongly -multiplicative sequence and a (well-chosen) rational function. A typical example is: where is the sum of the binary digits of the integer . Furthermore closed formulas for series involving automatic sequences that are not strongly -multiplicative, such as the regular paperfolding and Golay-Shapiro-Rudin sequences, are obtained; for example, for integer : where is the regular paperfolding sequence and is an Euler number.
Keywords
Cite
@article{arxiv.1408.5770,
title = {Summation of rational series twisted by strongly B-multiplicative coefficients},
author = {Jean-Paul Allouche and Jonathan Sondow},
journal= {arXiv preprint arXiv:1408.5770},
year = {2015}
}
Comments
Typo in a crossreference corrected in Example 9, page 6. Remark added top of Page 9 about the relation between paperfolding and the Jacobi-Kronecker symbol