[seqfan] Re: sigma(n) =

[M. F. Hasler]

On Fri, Nov 20, 2015 at 5:59 AM, Olivier Gerard
<olivier.gerard at gmail.com> wrote:
> In my opinion,  the sequence 5)  sigma(n) = 2*sigma(n - 2)   is interesting
> and you should submit it.
>
>
> On Wed, Nov 11, 2015 at 8:07 AM, юрий герасимов <2stepan at rambler.ru> wrote:
>> Dear SeqFans, also n such that:
>>
>> 5) sigma(n) = 2*sigma(n - 2): 120. 1560, 2940, 17760, 19920, 32220, 33840,
>> 55965, 710040, 186780, 308040, 511500, 523776, 553500, 699360, 838215, ...

Looking at the first terms, it seems that this is a subsequence of A204830.

- Maximilian