[seqfan] Re: Just a quick (but hard?) funny sequence idea

[David Corneth]

A program to find n such that 2^n starts with 7's is here:
http://mymathforum.com/computer-science/14033-pari-3.html#post59811
in which there is a discussion on how this works. Surely the prog can be
adapted for this question.

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On Sat, Aug 26, 2017 at 12:23 PM, Felix Fröhlich <felix.froe at gmail.com>
wrote:

> Dear Sequence Fans,
>
> just had the idea for the following funny sequence:
>
> Least k > 1 such that the initial n digits in the decimal expansions of Pi
> and Pi^k coincide, ignoring the decimal point.
>
> a(1) = a(2) = 3, since Pi = 3.14159... and Pi^3 = 31.00627..., where first
> two digits (31) coincide.
>
> What are further terms of the sequence?
>
> Best regards
> Felix Fröhlich
>
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