[seqfan] Re: Primes where every other digit is 1

Frank Adams-watters franktaw at netscape.net
Fri Oct 22 16:59:00 CEST 2021

To match these values, you need to specify that only every other digit is 1, ending with the final digit being 1,

Franklin T. Adams-Watters

-----Original Message-----
From: Lars Blomberg <lars.blomberg2 at hotmail.com>
To: Sequence Fanatics Discussion list <seqfan at list.seqfan.eu>
Sent: Thu, Oct 21, 2021 4:28 am
Subject: [seqfan] Primes where every other digit is 1


Is this of interest:
31,41,61,71,101,131,151,181,191,2131,2141, ...
... or 3,7,9.

/Lars Blomberg

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