[seqfan] Re: Sirag numbers.

[franktaw at netscape.net]

 From basic number theory, n is a Sirag number iff n*(n+1) = 4^j * 
(8k+7) for some integer j and k.

Franklin T. Adams-Watters

-----Original Message-----
From: Antti Karttunen <antti.karttunen at gmail.com>

More about them:
http://quantumtantra.blogspot.com/2011/09/september-events.html


On Thu, Sep 29, 2011 at 7:36 PM, Antti Karttunen
<antti.karttunen at gmail.com>wrote:

>
> Not yet in OEIS:
> http://quantumtantra.blogspot.com/2011/08/sirag-numbers.html
>
>
> Cheers,
>
> Antti