[seqfan] Re: I wonder
Vladimir Shevelev
shevelev at bgu.ac.il
Sat Jul 17 11:00:58 CEST 2010
Many perfect squares in {a(i)}. The corresponding characteristic sequence for them is: {1,0,0,1,1,0,1,1,0,0,1,0,0,1 (...)}. Up to now it coincides with A083035. Continue a research: how many coinciding terms among the first n ones? It is truth, I am not feeling what does lead a such research to? But you could try.
Regards,
Vladimir
----- Original Message -----
From: Veikko Pohjola <veikko at nordem.fi>
Date: Saturday, July 17, 2010 10:28
Subject: [seqfan] I wonder
To: Sequence Fanatics Discussion list <seqfan at list.seqfan.eu>
> Might these be of some more general interest?
> 1. The sequence a(i) of the integer terms of a(n) =
> n^2/PrimePi(n), n=2,3,4,....
> a(i) = 4, 8, 12, 16, 25, 50, 64, 81, 90, 99, 196, 242, 384, 400, ...
> 2. The sequence n(i) of the integer terms of a(n)
> n(i) = 2, 4, 6, 8, 10, 20, 24, 27, 30, 33, 56, 66, 96, 100, ...
>
> For me, so far, they just look nicely progressing sequences.
> Veikko
>
> _______________________________________________
>
> Seqfan Mailing list - http://list.seqfan.eu/
>
Shevelev Vladimir
More information about the SeqFan
mailing list