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A147830 Minimum number k for which the digital sum of k*n is 10n. 2
0, 19, 199, 1333, 17497, 199999, 1333333, 12842857, 374999986, 1111111111, 199999999999 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..10.

MAPLE

P:=proc(i) local j, k, n, ok, w; for n from 0 by 1 to i do j:=-1; ok:=1; while ok=1 do j:=j+1; w:=0; k:=n*j; while k>0 do w:=w+k-(trunc(k/10)*10); k:=trunc(k/10); od; if w=10*n then ok:=0; print(j); fi; od; od; end: P(100);

CROSSREFS

Cf. A147822-A147829, A147831.

Sequence in context: A058370 A164890 A066007 * A135162 A185687 A067272

Adjacent sequences:  A147827 A147828 A147829 * A147831 A147832 A147833

KEYWORD

easy,nonn,base

AUTHOR

Paolo P. Lava and Giorgio Balzarotti, Nov 14 2008

EXTENSIONS

Edited by Charles R Greathouse IV, Nov 01 2009

a(6)-a(10) from Donovan Johnson, Sep 16 2012

STATUS

approved

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Last modified May 23 07:10 EDT 2013. Contains 225585 sequences.