[seqfan] Re: A055458: solution to phi(c+46)=c+46 for composite c

[Max Alekseyev]

I think it an ill practice to insert -1 for unknown values. This way many
sequences in the OEIS can be "extended" with -1's.
The sequence should be truncated at the first unknown value.
Regards,
Max


On Tue, Apr 28, 2015 at 10:43 AM, Richard J. Mathar <mathar at mpia-hd.mpg.de>
wrote:

> Does anyone have information of the values of A055458 at
> n=23, 35, 49, 59, 61,...? Are there composite c such that phi(c+46)=c+46,
> for example?
>
> RJM
>
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