I’ve now put on the wiki a C++ program that allows to investigate the growth of D as a function of length for completely-multiplicative sequences, depending on how one chooses the values at prime indices.

Here is a first plot: for the first values I’ve imposed only , and then chose to impose or depending on which gave the smallest quantity , where is the next prime and with the partial sum of the d-HAP up to .

On the plot I’ve show (the very flat curve), the partial sums of the sequence and its first few HAPs, and both and .

For comments and analysis, please see the wiki.

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