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Search: id:A091329
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A091329 Bar coding for digits 0 through 9 in Universal Product Code (or UPC). +0
1
3211, 2221, 2122, 1411, 1132, 1231, 1114, 1312, 1213, 3112 (list; graph; listen)
OFFSET

0,1

COMMENT

These are compositions of 7 into 4 parts, but otherwise seem quite random.

LINKS

How Stuff Works, How UPC Bar Codes Work

EXAMPLE

Zero is 3211, which means either a white bar of width 3, a black bar of width 2, a white bar of width 1 and a black bar of width 1; or black bar of width 3, a white bar of width 2, a black bar of width 1 and a white bar of width 1.

CROSSREFS

Sequence in context: A023308 A054036 A048255 this_sequence A020414 A118212 A048421

Adjacent sequences: A091326 A091327 A091328 this_sequence A091330 A091331 A091332

KEYWORD

nonn,fini,full

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), May 06 2004

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Last modified December 1 13:27 EST 2009. Contains 167806 sequences.


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