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A124170
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Said to have been posted at the web site mturk.amazon.com as a puzzle.
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0
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OFFSET
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1,1
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COMMENTS
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If anyone can supply more information about this sequence, please let me know. - N. J. A. Sloane
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LINKS
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CROSSREFS
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KEYWORD
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sign,unkn
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AUTHOR
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STATUS
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approved
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