A132932 Concatenation of first n composite numbers.

4, 46, 468, 4689, 468910, 46891012, 4689101214, 468910121415, 46891012141516, 4689101214151618, 468910121415161820, 46891012141516182021, 4689101214151618202122, 468910121415161820212224

Offset

1,1

Links

Table of n, a(n) for n=1..14.

Prog

(PARI) lista(nn) = {s = ""; forcomposite(n=1, nn, s = concat(s, Str(n)); print1(eval(s), ", "); ); } \\ Michel Marcus, Nov 06 2015

Crossrefs

Composite numbers: A002808. Cf. A007908, A019518.

Sequence in context: A218997 A279523 A194488 * A231787 A173716 A320229

Adjacent sequences: A132929 A132930 A132931 * A132933 A132934 A132935

Keyword

easy,nonn,base

Author

Omar E. Pol, Sep 12 2007

Extensions

Edited by Charles R Greathouse IV, Apr 28 2010

Offset set to 1 by Michel Marcus, Nov 06 2015

Status

approved