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A164804
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a(n) = smallest number which has in its Spanish name the letter "u" in the n-th position, or -1 if no such number exists.
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0
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1, 4, -1, 1001, 50, -1, 19, 24, 31, 34, 44, 54, 119, 124, 131, 134, 144, 154, 231, 234, 244, 254, 354, 444, 454
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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COMMENTS
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a(1)=Uno, a(2)= cUatro, a(4)= mil Uno
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LINKS
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CROSSREFS
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KEYWORD
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word,sign
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AUTHOR
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STATUS
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approved
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