Triple FJS

[Joerg Arndt]

* Eric Angelini <keynews.tv at skynet.be> [May 03. 2005 12:19]:
> Hello SeqFans,
> I'm working on "Fractal Jump Sequences" for the moment
> (search the OEIS with the string "FJS"). I have found this:
> 
> (a)   1  1 3   1 1 3   1 3   1 1 3   1 1 3   1 3   1 1 1 3   3 ...
> (b)  1 13 1 131 3 1 131 1 313 1 1 133 1 3 111 1 313 3 1 1 133 1 ...
>      ----------------------------------------------------------
> (c)  1113113131131131311133131111313311133111113313131111313331 ...

>      ^
> - the succession of digits in (a) and (b) are the same;
> - when I "push" (a) into (b) I get (c);
> - ... and (c) has the same succession of digits as (a) and (b)
>       [except for the initial "1"].
> 
> Does this ring a bell to someone ? Is it of interest ?

You might want to check  A035263 "period-doubling sequence".


> [...] 

-- 
p=2^q-1 prime <== q>2, cosh(2^(q-2)*log(2+sqrt(3)))%p=0
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