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A071826
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Concatenate first n terms of A007770.
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0
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1, 17, 1710, 171013, 17101319, 1710131923, 171013192328, 17101319232831, 1710131923283132, 171013192328313244, 17101319232831324449, 1710131923283132444968, 171013192328313244496870
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history;
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OFFSET
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1,2
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REFERENCES
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Shyam Sunder Gupta, Smarandache Sequence of Happy Numbers, Smarandache Notions Journal, Vol. 13 (2002).
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LINKS
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EXAMPLE
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a(3)=1710 because 1,7,10 are consecutive terms of A007770 starting from first.
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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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