Sequence for points that spiral around a point (R.Graham idea connected to my Queens Puzzle Work).

[Mario VELUCCHI]

TO: SeqFAN .....

> Date: Thu, 19 Nov 1998 14:53:28 +0000
> From: David Singmaster Computing & Maths South Bank Univ
> Subject: [NOBNET 1039] RE:  Fwd: Sequence for points that spiral around a point
> To: nobnet at iijnet.or.jp
>
>       Sorry, but I can't understand what the sequence is??  Can you supply
> some more information?
> 

Please use the enclosed lattice.gif picture ...
I am sorry for my precedent e-mail,
and thanks in advance for your references!

|
| Dear Seqfans friends,
| I am looking for references about this sequence:
| "The number of lines generated by n points that spiral around a fixed
| point an a hexagonal lattice"
| (R.Graham idea connected to my Queens Puzzle Work, source: M.Gardner
| article based on Velucchi and Graham works, to appear!).
|
|  n  lines
|  0  0
|  1  3
|  2  5
|  3  6
|  4  7
|  5  8
|  6  9
|  7  9
|  8 10
|  9 11
| 10 11
| .. ..
|


> DAVID SINGMASTER,  Professor of Mathematics and Metagrobologist
> School of Computing, Information Systems and Mathematics
> Southbank University, London, SE1 0AA, UK.
> Tel: 0171-815 7411;  fax: 0171-815 7499; 
> email:  zingmast  or  David.Singmaster  @sbu.ac.uk





==
Best, Mario Velucchi
---- HOME ADDRESS:
Mario VELUCCHI  /  Via Emilia, 106  /  I-56121 Pisa (Italy)
-----------------------------------------------------------
http://www.bigfoot.com/~velucchi
E-Mail: velucchi at bigfoot.com

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