A071826 Concatenate first n terms of A007770.

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).

Links

Table of n, a(n) for n=1..13.

S. S. Gupta, Smarandache Sequences of Happy Numbers

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

Adjacent sequences: A071823 A071824 A071825 * A071827 A071828 A071829

Keyword

easy,base,nonn

Author

Shyam Sunder Gupta, Jun 08 2002

Status

approved