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A147822 Minimum number k for which the digital sum of k*n is 2n. 9
0, 2, 2, 2, 2, 11, 8, 11, 11, 11, 299, 209, 74, 146, 407, 533, 623, 587, 1111, 2621, 29999, 3809, 20909, 13043, 29162, 119999, 38423, 37037, 178571, 241031, 2333333, 645158, 1874684, 2030303, 2352647 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

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=2*n then ok:=0; print(j); fi; od; od; end: P(100);

CROSSREFS

A147823-A147831

Sequence in context: A175392 A112727 A164918 * A084961 A029643 A100687

Adjacent sequences:  A147819 A147820 A147821 * A147823 A147824 A147825

KEYWORD

easy,nonn,base

AUTHOR

Paolo P. Lava & Giorgio Balzarotti (paoloplava(AT)gmail.com), Nov 14 2008

EXTENSIONS

Edited by Charles R Greathouse IV (charles.greathouse(AT)case.edu), Nov 01 2009

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Last modified February 14 17:39 EST 2012. Contains 205648 sequences.