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A053052
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Append n to the previous term, reverse alternate terms.
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1
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1, 21, 123, 4321, 12345, 654321, 1234567, 87654321, 123456789, 10987654321, 1234567891011, 121110987654321, 12345678910111213, 1413121110987654321, 123456789101112131415
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OFFSET
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1,2
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REFERENCES
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Felice Russo, A set of new Smarandache functions, sequences and conjectures in number theory, American Research Press 2000
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LINKS
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CROSSREFS
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KEYWORD
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easy,base,nonn
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AUTHOR
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STATUS
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approved
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