A159903 Concatenation of the first n nonsquarefree numbers A013929.

4, 48, 489, 48912, 4891216, 489121618, 48912161820, 4891216182024, 489121618202425, 48912161820242527, 4891216182024252728, 489121618202425272832, 48912161820242527283236

Offset

1,1

Links

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

Example

a(4) = 48912 is the concatenation 4//8//9//12 of A013929(1) to A013929(4).

Crossrefs

Cf. A013929.

Sequence in context: A026942 A264727 A283049 * A099671 A196963 A220325

Adjacent sequences: A159900 A159901 A159902 * A159904 A159905 A159906

Keyword

nonn,base,less

Author

Jaroslav Krizek, Apr 25 2009

Extensions

Slightly edited by R. J. Mathar, Apr 28 2009

Status

approved