[seqfan] Re: Underline a(n) when n=3k

[Joerg Arndt]

* M. F. Hasler <seqfan at hasler.fr> [Mar 07. 2015 19:54]:
> Hello Eric,
> 
> I was about to add your sequence with (0,1) instead of (1,2) which I felt
> more natural, I wanted to name it:
> "Lexicographically first nontrivial sequence such that a(3n)=a(n) and
> removing every third term also gives back a(n)."

...which is a better name than the current as proposed in the edit.

The g.f. should therefore satisfy some neat functional equation.

Best & good night,  jj


> 
> But then I noticed that this is your sequence https://oeis.org/A117943 :-)
> 
> Nice week-end to you and all SeqFans,
> 
> Maximilian
> 
> [...]