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A123727 An example of a stereogram: a flat picture that appears three-dimensional when viewed in the correct way. 1

%I

%S 1,111,1,111,11211,111,1,111,11211,1123211,11211,111,1,111,11211,

%T 1123211,112343211,1123211,11211,111,1

%N An example of a stereogram: a flat picture that appears three-dimensional when viewed in the correct way.

%C What happens after 9? - _N. J. A. Sloane_, Nov 18 2006

%C Three-dimensionally it looks like this:

%C ...000000000000000000000000000000010000000000000000000000000000000000...

%C ...000000000000000000000000000000111000000000000000000000000000000000...

%C ...000000000000000000000000000000010000000000000000000000000000000000...

%C ...000000000000000000000000000000111000000000000000000000000000000000...

%C ...000000000000000000000000000001121100000000000000000000000000000000...

%C ...000000000000000000000000000000111000000000000000000000000000000000...

%C ...000000000000000000000000000000010000000000000000000000000000000000...

%C ...000000000000000000000000000000111000000000000000000000000000000000...

%C ...000000000000000000000000000001121100000000000000000000000000000000...

%C ...000000000000000000000000000011232110000000000000000000000000000000...

%C ...000000000000000000000000000001121100000000000000000000000000000000...

%C ...000000000000000000000000000000111000000000000000000000000000000000...

%C ...000000000000000000000000000000010000000000000000000000000000000000...

%C ...000000000000000000000000000000111000000000000000000000000000000000...

%C ...000000000000000000000000000001121100000000000000000000000000000000...

%C ...000000000000000000000000000011232110000000000000000000000000000000...

%C ...000000000000000000000000000112343211000000000000000000000000000000...

%C ...000000000000000000000000000011232110000000000000000000000000000000...

%C ...000000000000000000000000000001121100000000000000000000000000000000...

%C ...000000000000000000000000000000111000000000000000000000000000000000...

%C ...000000000000000000000000000000010000000000000000000000000000000000...

%C ...000000000000000000000000000000111000000000000000000000000000000000...

%C ...000000000000000000000000000001121100000000000000000000000000000000...

%C ...000000000000000000000000000011232110000000000000000000000000000000...

%C ...000000000000000000000000000112343211000000000000000000000000000000...

%C ...000000000000000000000000001123454321100000000000000000000000000000...

%C ...000000000000000000000000000112343211000000000000000000000000000000...

%C ...000000000000000000000000000011232110000000000000000000000000000000...

%C ...000000000000000000000000000001121100000000000000000000000000000000...

%C ...000000000000000000000000000000111000000000000000000000000000000000...

%C ...000000000000000000000000000000010000000000000000000000000000000000...

%D C. Ashbacher, Smarandache Sequences, Stereograms and Series, Phoenix, 2005, pp. 70-71.

%D F. Smarandache, Sequences of Numbers Involved in Unsolved Problems, Hexis, Phoenix, 2006.

%H C. Ashbacher, <a href="http://www.gallup.unm.edu/~smarandache/Ashbacher-book5.pdf">Smarandache Sequences, Stereograms and Series</a>.

%H F. Smarandache, <a href="http://www.gallup.unm.edu/~smarandache/Sequences-book.pdf">Sequences of Numbers Involved in Unsolved Problems</a>.

%Y Cf. A123698.

%K nonn

%O 1,2

%A Z. Wenpeng (wpzhang(AT)nwu.edu.cn), Nov 18 2006

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Last modified September 22 03:21 EDT 2020. Contains 337289 sequences. (Running on oeis4.)