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A071826
Concatenate first n terms of A007770.
0
1, 17, 1710, 171013, 17101319, 1710131923, 171013192328, 17101319232831, 1710131923283132, 171013192328313244, 17101319232831324449, 1710131923283132444968, 171013192328313244496870
OFFSET
1,2
REFERENCES
Shyam Sunder Gupta, Smarandache Sequence of Happy Numbers, Smarandache Notions Journal, Vol. 13 (2002).
EXAMPLE
a(3)=1710 because 1,7,10 are consecutive terms of A007770 starting from first.
CROSSREFS
Sequence in context: A242228 A373856 A222905 * A055414 A156675 A276808
KEYWORD
easy,base,nonn
AUTHOR
Shyam Sunder Gupta, Jun 08 2002
STATUS
approved