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A166874
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Numbers with vertical symmetry when expressed as Roman numerals.
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2
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1, 2, 3, 5, 10, 19, 20, 30, 1000, 2000, 3000
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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