# [seqfan] Re: There are more terms in this sequence?

Harvey P. Dale hpd1 at nyu.edu
Sat Feb 5 22:26:07 CET 2011

```	The next term is 5788838100, as provided by Donovan Johnson
today.   I have updated A185873 to include the values of k for each
now-known term of the sequence.
Best,
Harvey
Harvey P. Dale
University Professor of Philanthropy and the Law
Director, National Center on Philanthropy and the Law
139 MacDougal Street
New York, N.Y. 10012-1076

-----Original Message-----
From: seqfan-bounces at list.seqfan.eu
[mailto:seqfan-bounces at list.seqfan.eu] On Behalf Of Charles Greathouse
Sent: Friday, February 04, 2011 12:31 PM
To: Sequence Fanatics Discussion list
Subject: [seqfan] Re: There are more terms in this sequence?

The next term is 4172437680.

1, 130, 1860, 148480, 3039520, 4172437680, ...

I can't find a good heuristic for how common these should be.

Charles Greathouse
Analyst/Programmer
Case Western Reserve University

On Thu, Feb 3, 2011 at 10:37 AM, Claudio Meller
<claudiomeller at gmail.com> wrote:
> There are more terms in this sequence?
> Is good the title ?
>
> Numbers that are equal to the sum of the squares of his first divisors
>
> 1, 130, 1860, 148840, 3039520
>
> 130 (1, 2, 5, 10) 1^2+2^2+5^2+10^2 = 1+4+25+100 = 130
>
> 1860 (1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30)
>
> 148480 (1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 128,
145,
> 160, 232)
>
> 3039520 (1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88,
110
> 121, 157, 160, 176, 220, 242, 314, 352, 440, 484, 605, 628, 785, 880)
121,
> 157, 160, 176, 220, 242, 314, 352, 440, 484, 605, 628, 785, 880)
>
> Thanks,
> Claudio
>
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>
> Seqfan Mailing list - http://list.seqfan.eu/
>

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