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Search: id:A091329
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| A091329 |
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Bar coding for digits 0 through 9 in Universal Product Code (or UPC). |
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+0 1
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| 3211, 2221, 2122, 1411, 1132, 1231, 1114, 1312, 1213, 3112
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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These are compositions of 7 into 4 parts, but otherwise seem quite random.
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LINKS
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How Stuff Works, How UPC Bar Codes Work
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EXAMPLE
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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.
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CROSSREFS
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Sequence in context: A023308 A054036 A048255 this_sequence A020414 A118212 A048421
Adjacent sequences: A091326 A091327 A091328 this_sequence A091330 A091331 A091332
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KEYWORD
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nonn,fini,full
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), May 06 2004
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