[seqfan] Re: smallest number which is coprime to the last three predecessors and not occurring earlier;

[Peter Pein]

On 18.01.2011 01:44, Jonathan Post wrote:
> 1,2,3,5,7,4,9,10,11,...
>
> is that the right start for smallest number which is coprime to the
> last three predecessors and not occurring earlier; a(1)=1, a(2)=2,
> a(3) = 3?
>
> This would be to 3 as A084937 is to 2.
>
> It would be a permutation of the natural numbers.
>
> Is it still true that primes occur in natural order?
>
> Would it also have few fixed points?
>
> -- Jonathan Vos Post
>
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see http://oeis.org/A103683 ?