[seqfan] Re: mirror numbers in A176356

Jeremy Gardiner jeremy.gardiner at btinternet.com
Sat Sep 24 23:23:44 CEST 2011

Perhaps this sequence should be "prime terms of A080228"?

But should the reflected numbers allow leading zeros?
This seems inelegant.

------ Forwarded Message
From: "franktaw at netscape.net" <franktaw at netscape.net>
Date: Fri, 23 Sep 2011 16:40:25 -0400 (EDT)

The mirror is in a plane parallel to the one the numbers are in. This
produces the interchange of 2 and 5, and the reversal of the digits, with 0,
1, and 8 fixed.

On the other hand, the test for primality seems to have failed almost
completely. We should not have 1, 10, 100; and we should have 5, 11, 50,
101, 110, 115, etc.

-----Original Message-----
From: Richard Mathar <mathar at strw.leidenuniv.nl>

It would be nice if someone could provide a coherent explanation or
construction of http://oeis.org/A176356

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