[seqfan] Re: Prime partial sum of digits

Bob Selcoe rselcoe at entouchonline.net
Mon Nov 9 19:04:22 CET 2015


Hi Eric & Lars,

a(9)=42 is correct because 4 already appears; Unless I'm missing something S 
terminates at a(18) = 4000 because partial sum = 113 and next prime = 127 > 
113+9.

Cheers,
Bob

--------------------------------------------------
From: "Lars Blomberg" <larsl.blomberg at comhem.se>
Sent: Monday, November 09, 2015 11:48 AM
To: "'Sequence Fanatics Discussion list'" <seqfan at list.seqfan.eu>
Subject: [seqfan] Re: Prime partial sum of digits

> Hello,
>
> I get 18 terms =  2, 1, 4, 6, 40, 20, 46, 8, 42, 400, 60, 62, 64, 26, 406, 
> 80, 48, 4000 and no more terms < 10^12.
> /Lars B
>
 




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