[seqfan] Re: Primes p such that sigma (p - 1) = sigma (p + 1)

Zak Seidov zakseidov at mail.ru
Thu May 5 18:50:41 CEST 2016

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 Thx!!


>Четверг,  5 мая 2016, 19:45 +03:00 от Hans Havermann <gladhobo at teksavvy.com>:
>
>https://oeis.org/A067891
>
>
>--
>Seqfan Mailing list -  http://list.seqfan.eu/

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