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A114433
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Last digit (the checksum) of 10-digit ISBN numbers, 10 is represented as "X".
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0
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9, 7, 5, 3, 1, 10, 8, 6, 4, 8, 6, 4, 2, 0, 9, 7, 5, 3, 1, 5, 3, 1, 10, 8, 6, 4, 2, 0, 9, 2, 0, 9, 7, 5, 3, 1, 10, 8, 6, 10, 8, 6, 4, 2, 0, 9, 7, 5, 3, 7, 5, 3, 1, 10, 8, 6, 4, 2, 0, 4, 2, 0, 9, 7, 5, 3, 1, 10, 8, 1, 10, 8, 6, 4, 2, 0, 9, 7, 5, 9, 7, 5, 3, 1, 10, 8, 6, 4, 2, 6, 4, 2, 0, 9, 7, 5, 3, 1, 10
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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FORMULA
| The first nine digits of ten-digit ISBN numbers are assigned according to the language, publisher and book. The final digit is a checksum: 1 x the first digit, 2 x the second digit, ... 9 x the ninth digit, reduced modulo 11 and 10 is printed as "X".
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CROSSREFS
| Sequence in context: A191760 A109846 A096230 * A188141 A194554 A065467
Adjacent sequences: A114430 A114431 A114432 * A114434 A114435 A114436
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KEYWORD
| easy,nonn,base
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AUTHOR
| Jud McCranie (JudMcCranie(AT)ugaalum.uga.edu), Feb 13 2006
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