[seqfan] Re: 2^(n - 1) + p(n) = p(k)?

[Robert G. Wilson v]

Et al,

	I get {2, 3, 29, 89, 251, 659, 937, 1307, 1453, 8179, 9391, 12097, 28499, 83969, 101209} or k: {1, 2, 10, 24, 54, 120, 159, 214, 231, 1027, 1161, 1447, 3100, 8188, 9695}.

	But the bigger question is WHY?

	For 2^k + prime(k) result in: {3, 5, 7, 11, 37, 41, 43, 83, 269, 577, 1429, 1433, 2063, 2549, 8353, 10639, 15299, 16927, 18637, 20201, 24007, 30097, 34039, 41777}
But sequences like this usually give k: {2, 3, 4, 5, 12, 13, 14, 23, 57, 106, 226, 227, 311, 373, 1046, 1298, 1787, 1952, 2130, 2285, 2670, 3254, 3642, 4369} (A077375).


-----Original Message-----
From: SeqFan [mailto:seqfan-bounces at list.seqfan.eu] On Behalf Of Olivier Gerard
Sent: Thursday, August 01, 2013 10:57 AM
To: Sequence Fanatics Discussion list
Subject: [seqfan] Re: 2^(n - 1) + p(n) = p(k)?

Dear Iouri,

The list you are apparently looking for (if we look at your title, not at the text of your message which has a different definition) is

2, 3, 29, 89, 251, 659, 937, 1307, 1453, ...

This is the last time I forward such a request to the seqfan mailing list from you. The next ones of this form will be rejected.

You should try to use a mathematical computing system or a programming language if you want to study these definitions and find more terms.

The seqfan mailing list members are not your personal pocket calculator.

There are many free programs you can learn to use, such as Pari/GP, Sage, R, python, octave, etc. you can use to compute what interests you.

Take the time to pick one and use it. It is worth doing it.
There are also many tutorials in russian.

with my best regards,
с моими наилучшими пожеланиями

Olivier Gérard
Seqfan Mailing List Administrator



On Thu, Aug 1, 2013 at 3:57 PM, юрий герасимов <2stepan at rambler.ru> wrote:

>
> Hello, SegFans,
>
> Prime(n) such that 2*(n - 1) + prime(n) is prime:
>
> 2, 3, 29,...
>
> What is the next one ?
>
> Best regards,
>
> JSG
> .
>

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