OFFSET
1,2
COMMENTS
What happens after 9? - N. J. A. Sloane, Nov 18 2006
Three-dimensionally it looks like this:
...000000000000000000000000000000010000000000000000000000000000000000...
...000000000000000000000000000000111000000000000000000000000000000000...
...000000000000000000000000000000010000000000000000000000000000000000...
...000000000000000000000000000000111000000000000000000000000000000000...
...000000000000000000000000000001121100000000000000000000000000000000...
...000000000000000000000000000000111000000000000000000000000000000000...
...000000000000000000000000000000010000000000000000000000000000000000...
...000000000000000000000000000000111000000000000000000000000000000000...
...000000000000000000000000000001121100000000000000000000000000000000...
...000000000000000000000000000011232110000000000000000000000000000000...
...000000000000000000000000000001121100000000000000000000000000000000...
...000000000000000000000000000000111000000000000000000000000000000000...
...000000000000000000000000000000010000000000000000000000000000000000...
...000000000000000000000000000000111000000000000000000000000000000000...
...000000000000000000000000000001121100000000000000000000000000000000...
...000000000000000000000000000011232110000000000000000000000000000000...
...000000000000000000000000000112343211000000000000000000000000000000...
...000000000000000000000000000011232110000000000000000000000000000000...
...000000000000000000000000000001121100000000000000000000000000000000...
...000000000000000000000000000000111000000000000000000000000000000000...
...000000000000000000000000000000010000000000000000000000000000000000...
...000000000000000000000000000000111000000000000000000000000000000000...
...000000000000000000000000000001121100000000000000000000000000000000...
...000000000000000000000000000011232110000000000000000000000000000000...
...000000000000000000000000000112343211000000000000000000000000000000...
...000000000000000000000000001123454321100000000000000000000000000000...
...000000000000000000000000000112343211000000000000000000000000000000...
...000000000000000000000000000011232110000000000000000000000000000000...
...000000000000000000000000000001121100000000000000000000000000000000...
...000000000000000000000000000000111000000000000000000000000000000000...
...000000000000000000000000000000010000000000000000000000000000000000...
LINKS
Charles Ashbacher, Smarandache Sequences, Stereograms and Series, Phoenix, 2005, pp. 70-71.
Florentin Smarandache, Sequences of Numbers Involved in Unsolved Problems, Hexis, Phoenix, 2006.
CROSSREFS
KEYWORD
nonn
AUTHOR
Z. Wenpeng (wpzhang(AT)nwu.edu.cn), Nov 18 2006
STATUS
approved