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OFFSET
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1,1
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REFERENCES
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K. Russell and P. Carter, Number Puzzles, W. Foulsham and Co. Ltd. (1993).
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LINKS
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EXAMPLE
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2736 + 6372 = 9108
9108 + 8019 = 17127
17127 + 72171 = 89298
89298 + 89298 = 178596
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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Herman Jamke (hermanjamke(AT)fastmail.fm), Sep 14 2006
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STATUS
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approved
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