[seqfan] Re: Vertically symmetric numbers.

[Robert G. Wilson v]

Dear Tanya,

    These are "Strobogrammatic numbers", see 
http://www.research.att.com/~njas/sequences/A000787
allowing 2 to become 5 and vice-versa.

Sequentially yours, Bob.

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From: "Tanya Khovanova" <mathoflove-seqfan at yahoo.com>
Sent: Sunday, February 14, 2010 3:31 PM
To: "Sequence Fanatics Discussion list" <seqfan at list.seqfan.eu>
Subject: [seqfan]  Vertically symmetric numbers.

> Dear SeqFans,
>
> The following sequence has an unclear name. I would like to rename it. Any 
> suggestions? Centrally symmetric numbers? Rotationally symmetric numbers?
>
> A053701  Vertically symmetric numbers.
> 0, 1, 8, 11, 25, 52, 88, 101, 111, 181, 205, 215, 285, 502, 512, 582, 808, 
> 818, 888, 1001, 1111, 1251, 1521, 1881, 2005, 2115, 2255, 2525, 2885, 
> 5002, 5112, 5252, 5522, 5882, 8008, 8118, 8258, 8528, 8888, 10001, 10101, 
> 10801,
>
> COMMENT
> 2 and 5 taken as mirror images (as on calculator displays)
>
> Tanya
>
>
>
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