[seqfan] Re: Sol LeWitt's sequence 1, 3, 122

Neil Sloane njasloane at gmail.com
Tue Feb 12 02:31:12 CET 2013


He left out the full skeleton of the cube, so it should be
1, 3, 123
- subject to further checkin, of course

On Mon, Feb 11, 2013 at 8:24 PM, Neil Sloane <njasloane at gmail.com> wrote:

> Dear Sequence Fans, I came across an article in an old New Yorker:
>
> Peter Schjeldahl, Less is beautiful, The Art World, The New Yorker
> magazine, March 13, 2000, pp. 98-99.
>
> reviewing the work of the artist Sol LeWitt. One of his most famous pieces
> is called
> Variations of Incomplete Open Cubes. You can see it here:
> http://25.media.tumblr.com/tumblr_masbbafJ4K1rf1adro1_1280.jpg
>
> If I understand it correctly, he calculated that there are 122 different
> ways
> to select a subset of the 12 edges of a cube
> so that the result is connected and does not lie in any subspace.
> If two figures differ by a rotation he does not regard them as different,
> but he does if they differ by a reflection.
>
> The analogs in 1 and 2 dimensions are 1 and 3
> (in 2-D, take all 4 edges of a square, or drop one edge, or drop two
> adjacent edges).
>
> So we have 1, 3, 122.
>
> I wonder if 122 is correct and if so what is the next term?
>
> Neil
>
>
>


-- 
Dear Friends, I have now retired from AT&T. New coordinates:

Neil J. A. Sloane, President, OEIS Foundation
11 South Adelaide Avenue, Highland Park, NJ 08904, USA
Phone: 732 828 6098; home page: http://NeilSloane.com
Email: njasloane at gmail.com


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